Specification:
Bluetooth version: wireless V5.1 + EDR
Transmission distance: 10%
Usage time: 4 hours (calls and music)
Standby time: 300 hours
Battery: 30mAh, lithium battery
Powerbank: 250mAh
Charging time: 1.5 hours
Product size: 51 * 45 * 22mm
Product weight: 37.8g
Supported protocols: Handsfree, A2DP, Avrcp