Noise Cancellation wireless Bluetooth stereo Headset

HS-HZY19 Noise Cancellation wireless Bluetooth stereo Headset Features Specification Packaging& Accessories *Volume Adjust: 7musical scale,3dB per scale *Support: A2DP high quality popular music player, low-power, single-microphone noise cancellation feature support: multi-point connections (connect two phones at the same time) *Charging time: 2 hours Charging port: Micro USB *Keys: three (volume up and down, multi-function key) *working distance: 10 meters *Technical