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

Only four days into my testing. A good product in theory, however I can only think of one bonus for now. Battery actually lasts 18 to 20 hours; powerful sound, but insufficient to drown out street noise; poor sound insulation. The neck holder has already stretched and dangles, which is very unpleasant, and the headphones have too thin wires, which I hope will hold up. Next week, let's see how things go, and maybe I'll come back.