A3 Bluetooth 4.0 Single Earphone Sport Wireless HIFI Music Stereo Headset Headphone Built in Mic Mic
Specification:<br><br>Bluetooth version: V4.0<br>Support: HSP, HFP, A2DP and AVRCP<br>Battery: 3.7v 75mAh<br>Frequency range: 2.4GHz<br>Operating distance: up to 10m(free space)<br>Talking/music playing time: about 6h<br>Standby time: 260h<br>Charging time: about 1.5h<br>Frequency response: 100-8kHz<br>Operating temperature: -10~65 <br>Color: black+green<br><br><br>Package contents:<br>Headphone*1<br>USB cable*1<br>Earplug*4(2 pairs,not including 2 on the earphone)<br>Ear stabilizer*2(not including 1 on the earphone)<br>User manual*1