Neck mounted Bluetooth earphones, neck mounted Bluetooth earphones, retractable cable, super long standby, super long battery life Transmission range: 10 meters Features: battery display, call functio more→n, NFC function, voice control, support for music, multi-point connection Bluetooth protocol: 5.0 Usage: Neck mounted Whether it is single or double ear: bilateral stereo Battery life: 8 hours Package: 1pc