Koppo BT100 Bluetooth 2.1 + EDR Wireless Headset Headphones with Built-in Mic 10 Hours Battery

Description

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