Bluetooth headset
BT-155&BT-156

· Bluetooth protocol standards: Bluetooth Ver 3.0
· CSRsolution,HSP,HFP,A2DP,AVRCP
· Button function: V- /V+/music play/calls
· Receiver distance: 10m/360°
· Battery: Chargeable 3.7V/55mAh lithium-ion battery
· Charging time: Less than 3 hours
· Successive working time: About 5 hours
· Standby time: 180 hours

·
Speaker diameter: 10mm
· Microphone Unit: 4*1.5mm
· Impedance: 16Ω
· S.P.L: 106dB S.P.L.at 1KHz
· Frequency Response: 20Hz-20,000Hz