Business stereo bluetooth headset $ 6.85 specification: 100% new quality Wearing method: earhook Three designer microphones Bluetooth V4.0 version Can play music with play/pause, next and previous functions Function: answer phone, Bluetooth, microphone Bluetooth mode: hands-free, headset Talk time: about 6 hours Waiting time: 10 hours Easy charging via USB port Working voltage: 3.6V Charging time: 1-2 hours Working current: <= 35 mA Standby current: <= 2 mA Transmission distance: maximum 10M / 33FT (open space)