Sony WI-C400 Review: The Best Wireless Headphones

Sony has been making headphones since the 1960s. They have a deep understanding of how to make them and what people want from their headphones. Their WI-C400 Wireless Headphones are one example of this expertise. The Sony WI-C400 review will walk you through all the features that these wireless headphones offer, as well as some pros and cons to consider before purchasing a pair for yourself!

So, without any delay let’s get started.

Sony WI-C400 Review

Last updated on October 12, 2021 9:55 pm

Key Points

  • Comfortable behind-the-neck style.
  • Extended battery life of up to twenty hours.
  • Easy Bluetooth connectivity with one-touch NFC.
  • Multiple color options.
  • Easy to use on the move.
  • Not suitable for gaming and watching lots of videos.
  • Not foldable.

The Sony wi-c400 are wireless in-ear closed-back headphones with decent battery life. They’re suitable for those who don’t listen to high volumes or need an extended listening session but can handle average use just fine. The lightweight design of this headphone ensures stability during sports activities as well!

What’s in the box?

Well, before getting into that let me give you a quick overview.

What do they deliver at first glance?

  • Sony wireless wi c400 headphones.
  • A 50 cm USB cable.
  • Three ear tips of different sizes-small, medium, and large.
  • The manual.

Sony provides three different sizes of ear tips and they don’t come up with any cases or pouches, but the packaging is lovely. You may want to thank Sony for their thoughtful additions that make listening on the go a lot easier!

Key Specifications

  • Type: Close Back In-Ear.
  • Connectivity Type: Wireless.
  • USB Cable Length: 50 Cm.
  • Driver: 0.35 Inches Neodymium Driver.
  • Frequency Range: 8 To 22 kHz.
  • Color: Red, Blue, Black, White.
  • Weight: 1.23 Ounces Or 35g.
  • Wireless Range: 30 Feet.


Behind the neck design of these headphones is shaped for comfortable all-day listening. They are lightweight, and you can keep your cable clipped neatly out of the way in your neckband with an adjuster stopper or get an option to extend its length so that they don’t pull earbuds deeply enough into one’s ear canal like other types do – this silicone tip won’t disappoint!

The silicone ear tips are the way to go if you want a more comfortable experience. They can be inserted deeply and won’t irritate your ears as other in-ear headphones do, so they’re perfect for those who have sensitive skin or allergies!

Sound Profile

These headphones may not be the best for audiophiles, but they are pretty good. The frequency response range is 8 kHz to 22kHz and provides average sound quality; However, its bass lacks thump or rumble which makes it difficult for some types of music such as hip hop lovers who want more powerful low-end sound with clarity in their high frequencies also known as treble (8k-22khz).

The Sony WI C400 have 0.35 inches or 8.9mm, neodymium drivers, for dynamic sound, and their mid-range is pretty much impressive; there’s a slight bump in the low mids that gives it some chaotic vocal qualities which are evenly matched with instrumental instruments like guitars or drums–depending on your preference of course! Equally though, this same upper range makes high-pitched vocals cracky sounding too so you probably won’t want to use them onstage unless it’s just as background noise where good quality isn’t necessary but volume matters more (or maybe someone needs an extra ear).


Its closed-back design means they don’t have the same wide soundstage as open-back headphones, but that doesn’t mean it’s bad. The small stage just goes deeper in your ears and makes everything feel trapped inside yourself; this is what you want from a good pair of cans!

Do Sony-WI-C400 Headphones Leak Sound?

The sound leakage performance of the Sony WI-C400 is outstanding, unlike most in-ear headphones. Minimal leakage can be heard from about 3 kHz to 6 kHz and at a distance of about 1 foot away, but this doesn’t affect anything because it’s so minimal!

Noise Isolation

Sony’s WI C400 headphones don’t have an active noise cancellation system, but they do a good job at reducing outside sounds in the bass range and mids. The isolation for this category is 14dB above average with 35 dB of potential reduction as well–suitable to remove harsh frequencies from your music or other media playback without distortion!


The mic is pretty good for calls in an isolated environment. There will be no sound reduction or silence at any point to notice unless you’re on a noisy street or metro train with lots of background noise from other people around us who are using their phones as well!

 Recording Quality

The microphones might be good for making voice recordings, but they’re not the best. The microphones do have a deep bass extension and can pick up thumps from your surroundings that you don’t want in your recording – so keep this in mind before using them!

Build Quality

The build quality is not very good and the headphones don’t look like cheap ones. They get scratches on them quickly, but it has a one-year warranty to replace this product if something goes wrong with your purchase within that time span of twelve months.


You might think the Sony-WI-C400 headphones are boring, but they’re actually not. The behind-the-neck design has two casings that house all of its battery components and mic openings on either side for easy access without having to remove anything when changing cords or earbuds (which can get stuck).

It also features plastic bodies connected by just a slim stem which gives it an airy feel in your hands despite being made out of something so fragile: like glass! With such cheap audio cables – fortunately, we don’t have too many complaints here–you’ll want this product more than ever before.

Moreover, the headphones come in four different colors- red, blue, black, and white. You can take your favorite one from these multiple color options!


These headphones are a great choice for those who want to be discreet. They go up in your ear, so you can wear them at any time and carry on with the day-to-day activities that don’t seem like an issue as long as they stay put!


The Sony WI-C400 is an excellent choice for fitness activities due to its sturdy behind-the-neck design. They stay put gently around your neck even during intense physical activity, which makes it easier on you and lessens the risk of injury!

The cable management system in this device also deserves mention; keeping that length right requires some adjustment from time to time but overall we were pleased with how well they did at staying put without getting caught or slipping off our ears while exercising.

However there are a few flaws worth mentioning here: sometimes cables get caught when pulled too hard by certain items worn near us (like clothing), as well earbuds may slip away anytime if adjusted incorrectly.

Are They Waterproof?

The best way to wear these headphones is in a casual setting like sitting at your desk. They are not waterproof, so don’t try taking them for swims or showers!

Special Features

Do you feel like your phone is always in the palm of everyone’s hand? It can be a little distracting to have an incoming call and not know who it is until they speak. Now, there are some fixes for this problem! The vibration notifications will let us know that something important has come through our inbox or stream effortlessly with Bluetooth technology by tapping gently on our NFC logo ( Near Field Communication).

Bluetooth Details

These headphones have got the Bluetooth version 4.2, not the newer 5.0 upgrade offered by many companies including Sony and Apple with their new standards for audio quality playback that uses aptX or LDAC Codecs to provide high-fidelity sound over shorter distances up close without compromising anything else – such as bass levels in music tracks played at a distance where an external device can also pick them up properly too!

These cans are equipped with NFC support but no multi-device pairing option like some other models do; this means you’ll need two devices if you want to listen wirelessly while using another one nearby (or more).

How to Pair Sony WI-C400?

To pair the Sony WI-C400 follow the following steps:

Step 1: Turn on your headsets. Press and hold the power button for two seconds. Make sure that the blue light turns on.

Step 2: Turn on the Bluetooth from your device and search for a new device.

Step 3: Select the WI-C400 from the list and you will be notified by a voice message that Bluetooth Connected.

Enjoy your fav tunes and calls without reaching for your device.

Battery Details

Sony’s new line of headphones is excellent for those who want to enjoy their music or podcasts on the go. They have lithium polymer batteries with up to 20 hours of battery life, which means that you can listen all day long without having to recharge them!

I was really disappointed when Sony decided not to use USB-C charging since this newly trending type charges much quicker than MicroUSB does (charging times vary depending upon your device).

It takes 3 – 4 1/2 hours from dead in order for these cans to get juiced back up again though so make sure they are always fully charged before going out

Compatibility With Other Devices

You can use these headphones with your computer and phone. It is also very compatible for Android devices or iPhones, providing a great listening experience on both Windows ten as well MacOS X machines!

Is it Suitable For Gaming?

Sony Wireless WI C400 headphones are not the best when it comes to gaming as they have too much latency and do not support Sony’s app. Without customization options, these headsets will not give you an enjoyable experience while playing games!

Who Should Buy?

The behind-the-neck design is perfect for intense physical activities like gym, running and cycling. These headphones can also be used at your office since they are not bad with noise in a classroom or meeting as long as you close them properly when necessary.

However, it would struggle to isolate sound if there were many other people talking around the mic (although will have low leakage).

Additionally, these earphones work well while traveling too! With their long battery life, they’ll last all day without needing charge so don’t worry about being disconnected during various adventures abroad – take along some music instead of worrying about the battery.

Who Can Skip Them?

I would never suggest these headphones for a heavily vinyl or classical music lover, as they lack sound quality. However, if you are looking to use them during recording sessions then the Tascam TH 200X is perfect!

Compare With Others

Sony Wi C400 Vs. Sony Wi C300

The Sony WI-C300 headphones come with 8-hour battery life, but the C400 has 20 hours. They both have similar driver sizes and cannot provide active noise cancellation like their higher-end counterparts do (WI500X).

Sony Wi C400 Vs. EXFIT BCS-700

EXFIT BCS-700 headphones have an auto call answering feature to hear incoming conversations. Sony WI-C400 does not offer this and must be manually answered with the user’s phone in order for calls or messages from those on their contact list to come through clearly, but both types can vibrate when receiving notifications which is helpful if you’re busy working out while wearing them!

Are They Worth Buying?

Sony-WI-C400 headphones are worth buying if you want a headphone with pretty good sound quality and extended battery life. The only drawback is that the sound isn’t as good, but in this price range, it’s not bad at all! They last for an entire day without running out of juice (which makes them ideal) so they’re perfect for those who commute on their own everyday or work from home.

Alternative To Sony wireless WI-C400


When I first picked up the Sony wireless wi C400 headphones, they were nothing but an average pair of in-ears. But after using them over time and through several workouts with no fatigue or discomfort from my ears—I found that these little gems are actually one of the best pairs on today’s market for working out cravings while giving you quality sound output!