Stone Stereo Bluetooth Headset
Version:  V2.1+EDR
Support Profile:    Headset Profile      HandsFree Profile                                    A2DP Profile                                       AVRCP Profile 
Frequency: 2.4GHz
Transimit Power: Class 2                                                                Range:    10M
Adapter: AC Input 110-240V, DC out put 5V 60mAH Lithium Polymer
Music Time: 3H about
Talking Time: 3H about
Standby Time: 100H about
Dimmension :50*18.5*12.5 mm               
Product Weight: 9.6g about