1. Bluetooth V4.2 WT; support protocol Headset Hands-free A2DP Avrcp
2. Transmission range: 10 meters; Transmission frequency: 2.4GHz
3. Charging voltage DC5V; Charging time: about 2 hours; talk time / music
time: 3 hours; standby time: 90 hours
4. Battery capacity: 55mAh; size: L60 × W18 × H25mm; weight: 7g
5. Battery display <Support for Apple phones and some Android phones>