Review on Sony - C400 Wireless Behind-Neck In Ear Headphone White (WIC400/W) by Kim Chong ᠌

Comfort while donning. I like that the headphones are compact, and all the functioning component is concealed in the rim; I can wear them comfortably year-round, over or under clothing or scarves. When I use headphones, I never have to worry that they will "fall out, fall" because of my hair or earrings, which I am constantly adjusting. After many days of continuous office use on a full charge, headphones quickly become contaminated; Everything is good with the music as it is, with the volume turned up and some soundproofing; this is one area where Sony typically diverges from the competition. The NFC connection was a buzz. Time on the phone, with lights on and cables attached. For a whole year of frequent wearing, excursions, and not to say that careful attitude, they have not lost their appearance in the least; my only issue was 100% buzz only when I had a Sony (Z5) phone, but it stopped happening once I switched to a Huawei (p20 pro).