Sports Bluetooth neck earphone

Specifications version 5.4 BT battery capacity: 200 milliampere-hour standby time: approximately 200 hours music playback: 25 hours call time: about 20 hours features built-in microphone characterized by built-in microphone and remote control for switching the bet hands-free call voice clarity like the sun very comfortable for the ear and behind the neck product with a two-year warranty