Technical parameters:
1: Operating frequency 2.4GHZ-2.480MHZ
1: compliant with the Bluetooth standard V4.0
2: wireless range: 10 meters
3: transmit power: Glass2
4: Support Headset & Handsfree Profiles
5: headset built-in rechargeable lithium battery 150mAH:
6: Headset Talk Time: 6 hours Standby time: 150 hours
7: weighs only 50g， suitable for long wear without fatigue

Packet Included:  
1 x Bluetooth Sunglasses

1xUSB cable

1x mannal