Bluetooth headset
BT-570

· Bluetooth protocol standards: Bluetooth V2.1+EDR
· CSRsolution,HSP,HFP,A2DP,AVRCP
· Button function: V- /next music/V+/previous music/pause/play
· Receiver distance: 10m/360°
· Battery: Chargeable 3.7V/250mAh lithium-ion battery
· Charging time: Less than 3 hours
· Successive working time: About 8 hours
· Standby time: 180 hours

· Speaker diameter: 40mm
· Microphone Unit: 4*1.5mm
· Impedance: 32Ω
· S.P.L: 106dB S.P.L.at 1KHz
· Frequency Response: 20Hz-20,000Hz