Firstsing Bluetooth stereo headset Wireless handsfree CVC noise reduction headphones

Bluetooth:V4.1
Chip:CSR8615
Battery:55mAh
Frequency Range:50-15KHZ
Operation:Class 2
Mode:headset/handfree/A2DP/AVRCP
Operating range:5~10 metres
MP3 Playing Time:5 hours
Standby Time:100 hours
Charging Time:2~3 hours
Smart noise cancellation processing technology-Using the sixth bit 96KHz sampling frequency,give you a pure tone of voice.Eliminating all interference of background noise.
Strong signal-Little interference,low distortion and calling is clearer,10 meters of HD calls.