Version of the blue-tooth: V4.1+EDR<br>Supporting: A2DP， AVRCP， HSP， HFP， SPP. <br>Transmission range:10 meters<br>Response frequency: 20 Hz-20k Hz<br> Max talking time: 7 hours<br>Max music playing time: 7 hours<br>Standing-by time: 220 hours<br>Charging time: 1-2 hours<br>Charge  interface: micro-USB<br>Size: 18*7*56 mm<br>Addition: only supporting android 4.0 and above version       <br><br><br /></p> <br /></p><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/560a5c417323f352ab3a7407-1-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/560a5c417323f352ab3a7407-2-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/560a5c417323f352ab3a7407-3-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/560a5c417323f352ab3a7407-4-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/560a5c417323f352ab3a7407-5-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/560a5c417323f352ab3a7407-6-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/560a5c417323f352ab3a7407-7-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/560a5c417323f352ab3a7407-8-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/560a5c417323f352ab3a7407-9-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/560a5c417323f352ab3a7407-10-original.jpg" alt=""width="800" noproxy><p style="text-align: center;">