Features
Plug and play
A2DP/ AVRCP/ hands-free mode
General Specs
ModelBH-503
TypeWireless  Bluetooth headset
Bluetooth VersionV2.1
Wireless Frequency2.4-2.48 ghz
Transmission PowerClass 2
Transmission RangeAbout 10 m 
ChargerAC input 110-240 V, DC output 5 V
Conversion Time7 hours
Standby Time180 hours
Music Play Time6 hours