Description
Bluetooth V2.1+EDR
Bluetooth Profile Version: HSP, HFP, A2DP,AVRCP  
Transmitting Power: Class 2  
Operating distance: up to 10 meters  
Frequency range: 2.4026GHz - 2.48000GHz  
Rechargeable Battery: Lithium polymer,450mAh  
Charger specification: DC5.0V 300mA  
Charge time: 4 hours  
Talk time: 22 hours  
Listen time: 16 hours  
Standy  time: 200 hours                                                                                                           Color: black,white

Main Features:
1.comfortable for long time wearing   
2.stereo& realistic& natural music.