Sony WI-C400 Wireless In-Ear Headphones, Some irritating quirks but .

The sound is low apparently according to people on the other end of the phone which isn’t great, but at my end it sounds fine but they say i sound low. The music sound is very treblely. No good for the music i listen to. Useless on these earphones but if you can change the sound equaliser in your phone to sound better, then that’s great. They are probably best if you are listening to ‘talking’ via the headphones. People have said i sound louder in a call if i lift the left side of the neck band upto my face (mouth) so i presume the mic is in there. The buds feel secure in your ear.

I have been using it for almost a year now, still works like first day, these are my observations:- battery life is really good. I generally keep it connected to my phone for about 14h/day and approximately 6h of playing. I am amazed by the battery life, the longest i used without charging was 1 week and couldn’t finish the juice. – the sound quality is average, for the price i should not expect anything better, i can’t complain about it. But not amazing after all:- the microphone is terrible, people always complaint about my voice being muffed, not much can be done to solve it. – get affect by interference often. – lacks a forward button to skip tracks. – no spare bud tip in the package for replacement, lost mine and had to buy generic version. – could be more flexible in the back to better accommodate under the clothes, it is not flexible enough and the front part mark the clothes and is very uncomfortable to use, have to put over the clothes. Also not comfortable to use when lying.

Sound could be better, does not cancel out as much noise as i’d like, my old skullcandy’s did a better job at this but for in-ear and for the price i got them at i can live with it especially if you factor in battery life, other wireless in-ear i’ve own had about 8 hours at most. These will be great for my next long haul flight.

Comments from buyers

“Good for dancing.
, Great buds
, All day+ battery life, decent sound, great bluetooth buds.

I hardly write reviews on my product i buy from amazon. But i couldn’t stop myself writing a review for this one. It’s a best earphone i have ever used. The sound is very decent, battery life is extremely good. It’s 3rd days on my usage and haven’t charged it yet. It was staraight out of the box. Noise cancellation is great too. And it is very robust device. You can throw it, rub it on sand , it’s build like a tank.

I got not one but two faulty pairs. The first pair failed after about a month. The sound on the left bud suddenly dropped one day to about 10% of the volume of the right. Got them replaced for free by amazon straight away with no issue. Now 7 months later the replacement pair have also failed, again with the same issue of the left bud volume being a fraction of the right. Just happened last night out of the blue while i was washing the dishes. Very disappointing as i’ve really enjoyed my time with these earphone otherwise.

These are chunky, but that is a natural consequence of a big battery. Very easy to link to my samsung s8. The neckband is comfortable on my solid 17′ neck. It is good for running but the neck is a bit too solid for squats when you settle on the bar but as i squat with the bar low, not a problem for me but if you rest the bar on your neck it would irritate. Battery life is epically good. Bluetooth range is extraordinary. Buttons feel nice and solid.

I’m no audiophile and these sound great to me. Having these makes me wonder why i haven’t gone wireless before now. Use these pretty much exclusively with my android phone. Works perfect for music & films and telephone quality is great both ways. They even have a vibration built-in to help notify you of incoming calls. Buttons on the device are easy to use and a nice voice tells you when they’re powered on/off and when they’re connected/disconnected to something. Charger flap is easily accessible too. You could leave these on for hours accidentally and still have plenty of battery life left.

I love those little headphones, absolutely comfortable and light weight, after a couple of time that i wear them i got so accustom to them that now after 2 weeks is like they are not there,apart when my phone is ringing and the headphone vibrate so handy, never miss a phone call again. Audio qualtity is superb, what one expect form sony after all, so far i naver have a problem with battery. Battery level can be easly checked by pressing power botton and voice will tell you the level. Is possible to controll siri and alexa and google. Can spell out song title to alexa on amazon music without touching phone. Resistant to rain, i have been using them outdoor with rain dropping on them no problem at all. My only wish was that the cable lenght cuold be ancored to the lenght i prefer, even at full lenght cable are not in the way so i guess it doesn’t it works anyway.

I bought this on a whim seeing the price was reduced and battery life was rated high. I have used this type of bluetooth head set for a few years and oh how i wish i had come across these sonys’ before. I cant afford the top of range headsets but i doubt they would be any better. Controls are easy and intuative, the voice warning for on / off hi lo mid battery level is clear i am more than happy. Only niggle is each cable comes out the inside then slots through to the outside and is very thin but 6months continuous use (wife complains im never without them) as im retired, and still performing well.

The headphone fits me very well for its high sound quality , battery durability, and the motion design. But without the magnets in the buds so they swing when not used. After i checked the catalogue of the sony products, another version owns the function, and costs much more. In a word , it was worth of every penny.

Bought these for my wife, she uses these in the gym and for taking calls in her office. They are a known and trusted brand. Cons:the only reason for 4 stars is we had a pair that broke after around 7 weeks. Amazon where amazing as usual and exchanged without any issues. Not sure if it was a build quality issue, or we was unlucky and just got a bad pair. Summary:hopefully we was just unlock with the first pair that broke, because otherwise we really like these headphone.

I paid 30 in a deal, for that price these are amazing. The sound is good, battery life is amazing. 20 hours and i’m getting that. When connected to phone you see the battery level. Surprisingly comfy if like me you fall asleep with them on. Noise isolation is as good as any other device, please note these are not noise cancelling.

I bought this and another cheaper lesser known make at the same time and i have to say the difference in sound quality and comfort is night and daywell worth the extra £20. The battery is great, i have had it a week and not charge it yet and it still says battery highthere is just one issue which is very annoying. Pairing is easy but every time i turn off the headset i have to turn bluetooth off and then back on to get it to connect to media. I have tried this on a different phone and not got this problem so i think it might be a phone issue. Word of warning my phone is bluetooth version 5. Not sure if this is related and i have seen similar bugs on the internet but probably wont be an issue for most peopleall in all headphones are great.

Awesome quality, good resistance to water and sweat. Bought these for my job as i’m a cage dancer in an industrial club but i like to listen to celine dion when i’m swinging my booty. They regularly get drenched in sweat and glitter and are still pouring sweet high notes in my ears till the small hours of the morning.

They fit nicely in my ears and also under my 3m peltor ear defenders without causing any discomfort. The battery does last long i used it for 2 full days of music at work 16 hours total and the battery level was ‘medium’.

I quite literally use these 24 hours a day, with my portable charger i don’t have to take them off. The sound quality is fantastic, it’s sony, so of course it is. I can’t fault the sound quality. The battery life is very good, i’ve fallen asleep listening to music and woken up 9 hours later with them still on and then continued using them all the following day. I’ve used them whilst kickboxing sparring in the gym and the selection of earbuds allows me to select the best ones to fit my ear so they don’t fall out. If someone would’ve handed me a pair of these to use for a couple days and told me they cost twice the price i wouldn’t complain. These earphones are fantastic.

This works but it has quirks that could be annoying. For example it turns itself off occasionally or disconnects. You need to learn about the reset button(s). It is very comfortable to wear and i use it all the time so it can’t be that annoying.

Comfort: 4/5personally the neckband style of wireless headphones/earphones are not that comfortable for me, these are not that great either but that’s just a personal perspective on comfort. Sound: 4/5the sound quality isn’t that good if your an audiophile, but for general listening they are more than adequate. I have been spending about 8 hours a day wearing these and for audio books and podcasts the sound is as good if not better than sennheiser cx3. 00 which i had used for the previous 2 years. Battery life: 5/5battery life is where this excels. Due to working in a noisy factory i have the volume set at its highest, i get 2 full days before i charge them and even then it reports the battery level as medium so i would say that 20 hours at max volume is easily achievable. I have 2 very small sony mp3 players that have served me well for many years and that the battery technology sony uses in those is second to none which is why i opted to pay a bit more for a brand because i knew i’d get that better battery life. Connectivity: 5/5i have had minimal issues with connectivity. The sony wi c400 is paired with my one+5t and my acer r13 chromebook. The only issue i have is via the chromebook, the audio delay is about 0.

I really like these bluetooth headphones as the sound is quite good and the battery life lasts a very long time by comparison to other similar earphones. Although the sound is good, these are not as good as wired headphones where you can experience more bass. Having said that, they do the job if you are training or out for a long walk.

I bought these to wear when i go cycling and walking so i needed to be able to hear the music and my environment. They’re comfortable to wear and due to it’s style doesn’t fall off when it’s not in use around your neck. Sound quality is quite good.

Bought the red version for £40 (cheapest colour) which is around the right price for what you get, i wouldn’t have liked to pay more. Earbuds stay in well (not as comfy as previous sony models) and the brilliant battery life is a stand out benefit. It would be good if the headset vibrated when turning on/off as unless you have the earbuds in, you don’t know whether you’ve turned it on/off. Not the best, not the worst and probably is around what i expected for £40. Bass is only decent when the earbuds are properly in. Overall it’s a decent everyday pair of wireless headphones.

I use these headphones nearly everyday. From the morning commute to listening to music during the day and then a podcast/audiobook in the evening while out on the bike. The battery is reassuringly superb, often i’ll pick these up expecting them to be dead but the voice reports back ‘battery medium’ so i know i have another 8+ hours remaining. Audio quality is pretty good, controls are easy to use even with gloves once you learn the placement, very happy with these.

The sound is pretty good and you get decent bass as well. The battery life is incredible, you can go a couple of days without recharging no problem. They’re comfortable for long use, and you can sort of hide the collar under your own collar or shirt. So even when you’re not using them you can just keep them on your neck. I use them for exercising as well, but keep in mind they’re not sweat-proof or waterproof, so only light exercise. Downsides:since the battery life is so long, if you run out of battery it will take a good couple of hours to recharge.

These were bought as a gift and have been very well received. 5 weeks later and still not needing a charge, not in constant use of course. Very usable, great sound quality and quite discreet.

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One Response to Sony WI-C400 Wireless In-Ear Headphones, Some irritating quirks but .

  1. 3.0 out of 5 stars Sony WI-C400 says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    For the price and the very long battery life these are very good. The headset itself is very bulky and the sound is very low quality compared to others that i have purchased.
  2. Colour: White Verified Purchase says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    For the price and the very long battery life these are very good. The headset itself is very bulky and the sound is very low quality compared to others that i have purchased.
  3. 5.0 out of 5 stars All things considered, you can't beat Sony. says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    Battery life is superb, sound was fine for the price and the design is much more convenient to wear than earbuds.
  4. Colour: Blue Verified Purchase says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    Battery life is superb, sound was fine for the price and the design is much more convenient to wear than earbuds.
    • 3.0 out of 5 stars Not bad for a BT headset. says:
      It has excellent battery life that lasts long more then 2 days for me. But for the price i was expecting bit more sound quality. Feels plastic around the neck,bit bulky but won’t be seen with collared shirts.
      • Colour: Black Verified Purchase says:
        It has excellent battery life that lasts long more then 2 days for me. But for the price i was expecting bit more sound quality. Feels plastic around the neck,bit bulky but won’t be seen with collared shirts.
  5. 4.0 out of 5 stars Good quality and good value says:
    I bought these to go to the gym and have been very happy with the comfort, the fit and the sound quality.
    • Colour: Blue Verified Purchase says:
      I bought these to go to the gym and have been very happy with the comfort, the fit and the sound quality.
      • 5.0 out of 5 stars Brilliant, comfortable and a very long charge life says:
        I listen to audiobooks in bed and my wireless beatsx were falling apart. I bought these and was so impressed, a few days later, bought another pair for my wife. She is every bit as happy with hers as i am with mine. Plus i was able to get a 2 year insurance on each.
  6. Colour: White Verified Purchase says:
    I listen to audiobooks in bed and my wireless beatsx were falling apart. I bought these and was so impressed, a few days later, bought another pair for my wife. She is every bit as happy with hers as i am with mine. Plus i was able to get a 2 year insurance on each.
  7. 1.0 out of 5 stars Not worth it, waste of money says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    Poor voice quality, not recommend, don’t waste your penny.
  8. Colour: Red Verified Purchase says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    Poor voice quality, not recommend, don’t waste your penny.
  9. 4.0 out of 5 stars Durable... says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    Durable with excellent battery life but the sound quality is not what i expect from sony.
  10. Colour: Black Verified Purchase says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    Durable with excellent battery life but the sound quality is not what i expect from sony.
    • 3.0 out of 5 stars Good battery, bad stand-by option says:
      But the stand-by default option should had a way to be turned off. Becomes annoying and keeps disconnecting and reconnecting of you are not using it.
  11. Colour: Blue Verified Purchase says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    But the stand-by default option should had a way to be turned off. Becomes annoying and keeps disconnecting and reconnecting of you are not using it.
    • 5.0 out of 5 stars Great headphones says:
      I was a bit sceptical after reading some reviews but had these on all day loved them not sure about battery life yet or mike.
  12. Colour: Black Verified Purchase says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    I was a bit sceptical after reading some reviews but had these on all day loved them not sure about battery life yet or mike.
  13. 4.0 out of 5 stars Good battery and sound says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    Good battery life, it would be nice if it told you when battery was runnong low.
    • Colour: Blue Verified Purchase says:
      Good battery life, it would be nice if it told you when battery was runnong low.
      • 4.0 out of 5 stars Worth the buy says:
        Selected the white headphones but they are more grey in colour. Only issue is bluetooth connection if phone is not in the right position.
  14. Colour: White Verified Purchase says:
    Selected the white headphones but they are more grey in colour. Only issue is bluetooth connection if phone is not in the right position.
    • 3.0 out of 5 stars Good battery life. Not recommended for running. says:
      I liked the way the headphones worked and especially the battery life. I didn’t like the fact that after a run the headphones failed due to ‘water’ ingress. I finished exercising and they were still working, after a while they started to vibrate (as if someone was calling me) and that was it. Tempted to buy another pair but i won’t use them in the gym.
      • Colour: Black Verified Purchase says:
        I liked the way the headphones worked and especially the battery life. I didn’t like the fact that after a run the headphones failed due to ‘water’ ingress. I finished exercising and they were still working, after a while they started to vibrate (as if someone was calling me) and that was it. Tempted to buy another pair but i won’t use them in the gym.
  15. 5.0 out of 5 stars Amazing product says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    I love these earphones, bought it almost a year ago, still work perfectly. Easy to connect to any devise, i’ve tried with iphone se, iphone x, samsung s10 and tablet, and huawei tablet too. So it connects to everything. The only minus it doesn’t really cancel the surrounding noise.
    • Colour: Black Verified Purchase says:
      I love these earphones, bought it almost a year ago, still work perfectly. Easy to connect to any devise, i’ve tried with iphone se, iphone x, samsung s10 and tablet, and huawei tablet too. So it connects to everything. The only minus it doesn’t really cancel the surrounding noise.
      • 2.0 out of 5 stars Great for listening but very bad for phone-calls says:
        I like the quality of the sound when listening to music and movies. Works great with android and avantree audicast connected to pc. Unfortunately not suitable for the phone calls. Muted sound intermittent distortions and breaks. Hence the overall quality only 2 stars.
  16. Colour: Black Verified Purchase says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    I like the quality of the sound when listening to music and movies. Works great with android and avantree audicast connected to pc. Unfortunately not suitable for the phone calls. Muted sound intermittent distortions and breaks. Hence the overall quality only 2 stars.
  17. 5.0 out of 5 stars Awesome battery life says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    Longest battery life out there. Easy to use as you just wear it.
  18. 1.0 out of 5 stars Broke after 8 weeks says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    This didn’t happen on my previous jbl bluetooth headphones. Lost sound in the left ear after 8 weeks warranty was only for 30 days.
    • Colour: Blue Verified Purchase says:
      This didn’t happen on my previous jbl bluetooth headphones. Lost sound in the left ear after 8 weeks warranty was only for 30 days.
  19. 5.0 out of 5 stars A Fine Reproduction of the Original Recorded Source. says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    An excellent set of wireless in-ear phones which give a fine reproduction of the original recording.
  20. Colour: White Verified Purchase says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    An excellent set of wireless in-ear phones which give a fine reproduction of the original recording.
  21. 4.0 out of 5 stars Generally ok says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    Comfortable to wear if listening to music in bed to fall asleep. Sound quality is generally good, but get distortion because of bluetooth connectivity from time to time.
  22. Colour: Black Verified Purchase says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    Comfortable to wear if listening to music in bed to fall asleep. Sound quality is generally good, but get distortion because of bluetooth connectivity from time to time.
  23. 1.0 out of 5 stars Worst headphones ever! says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    Awful quality both build wise and sound. For £40 sony headphones they are cheap and plasticky and just terrible feeling. I got these as a replacement for £25 jabra headphones and the difference was gobsmacking, jabra faaaarrrrr superior in every way, except the ear piece didn’t fit my ear 😀 these are too quiet as well, i could easily my tv at normal operating volume over them when on full volume, hence sound quality was awful. Just don’t waste your money, there are far better options out there at this price and even cheaper.
  24. Colour: Blue Verified Purchase says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    Awful quality both build wise and sound. For £40 sony headphones they are cheap and plasticky and just terrible feeling. I got these as a replacement for £25 jabra headphones and the difference was gobsmacking, jabra faaaarrrrr superior in every way, except the ear piece didn’t fit my ear 😀 these are too quiet as well, i could easily my tv at normal operating volume over them when on full volume, hence sound quality was awful. Just don’t waste your money, there are far better options out there at this price and even cheaper.
    • 3.0 out of 5 stars Great battery life, not very stable on clothes around neck says:
      I love this headphones because of its lightness and battery life. However i found it a little unstable staying in place around my neck, especially when you have to rest them around clothes. The workaround i have is to ensure they sit directly on my neck under my collars, but that isn’t always convenient. The neckband needs to be made more firmer and stable.
      • Colour: Black Verified Purchase says:
        I love this headphones because of its lightness and battery life. However i found it a little unstable staying in place around my neck, especially when you have to rest them around clothes. The workaround i have is to ensure they sit directly on my neck under my collars, but that isn’t always convenient. The neckband needs to be made more firmer and stable.
  25. 1.0 out of 5 stars don’t trust it just coz it says sony, they’re made under the same regs as the cheap stuff. buy cheap says:
    Like with every sony product, lasts 4 months and then it’s done. They just don’t make their products well, loose connections and it’s all done intentionally.
  26. Colour: Black Verified Purchase says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    Like with every sony product, lasts 4 months and then it’s done. They just don’t make their products well, loose connections and it’s all done intentionally.
  27. 1.0 out of 5 stars Broke after a week of use says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    The sound quality was decent though it could’ve done with a bit less treble and more bass. But then it broke after a week. Also was uncomfortable in my ears.
  28. Colour: White Verified Purchase says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    The sound quality was decent though it could’ve done with a bit less treble and more bass. But then it broke after a week. Also was uncomfortable in my ears.
  29. 5.0 out of 5 stars Earpieces are very comfortable you don’t realise you have them in says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    Excellent product very pleased with my purchase which was based on other people’s reviews.
  30. Colour: Blue Verified Purchase says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    Excellent product very pleased with my purchase which was based on other people’s reviews.
  31. 5.0 out of 5 stars Wireless earphones says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    Bought as a present for my sister who enjoys running. She advises sound excellent, very comfortable and more importantly stays in place.
  32. Colour: Black Verified Purchase says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    Bought as a present for my sister who enjoys running. She advises sound excellent, very comfortable and more importantly stays in place.
  33. 5.0 out of 5 stars good one says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    I am using this product for week now. Good battery back up though.
    • Colour: Blue Verified Purchase says:
      I am using this product for week now. Good battery back up though.
      • 1.0 out of 5 stars Unreliable and likely to just stop working altogether. says:
        Rubbish product which has simply stopped working just over a month after purchase. Prior to refusing to work at all it would loose all battery power despite appearing to have a charge of 80% or thereabouts. Bluetooth would also randomly cut out completely without warning. Having previously used other sony bluetooth headphones which worked fine, and the good reviews for this product, i thought it would be a safe bet; couldn’t have been more wrong.
  34. Colour: Blue Verified Purchase says:

    This review is from : Sony WI-C400 Wireless In-Ear Headphones with up to 30 Hours Battery Life – Blue

    Rubbish product which has simply stopped working just over a month after purchase. Prior to refusing to work at all it would loose all battery power despite appearing to have a charge of 80% or thereabouts. Bluetooth would also randomly cut out completely without warning. Having previously used other sony bluetooth headphones which worked fine, and the good reviews for this product, i thought it would be a safe bet; couldn’t have been more wrong.

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