Review on Sony WIC400/L Wireless Behind-Neck In-Ear Headphones, Blue by Ravindra Devaraja

Got them four days ago. And do not believe it, just now I put it on charge, finally the battery has run out. In total, the charge was enough for all 20 hours, but no more (after all, I used them for more than 5-6 hours a day), perhaps due to the fact that I listened at 30-60% volume. In terms of ergonomics: whoever says anything, but all the buttons are in their place, it’s easy to operate intuitively, the bow is comfortable, the microphone is good, at least they hear me perfectly when talking. In terms of sound: it's just fantastic - the sound is excellent, everything is in its place, the perfect balance of lows and highs, namely: the bass is good but not excessive, they do not overlap the middle upper spectrum so that failures are excluded. Thanks to this, it seems that a live orchestra is playing in your head, you can really hear each instrument without distortion and as if each of them is in its place, and if you also turn on the 3D mode on the equalizer, then it's just a buzz and enjoying the sound above all measures. I checked it programmatically according to the audible frequency spectrum, I managed to hear from 6Hz to 20220 Hz, I don’t know about the declared 22022 Hz technical (yes, I think physical) possibility was not. In general, I absolutely recommend.