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

Other positive aspects include the fact that it doesn't have poor playability and that it has a lengthy battery life. I listened often, for 4 hours a day, it lasted for almost a week, without recharging. Got cons: They worked for a little over a year, and stopped catching connected devices. Does not see ! A year later, he started losing the signal, then connecting to it, and then interrupting it again.