Firstsing Stereo Hifi Active Noise Canceling Sport Universal Bluetooth 4.0 Leather Wireless Earphone with Mic

Bluetooth version:4.0
Chip: CSR8635
Operating range: 10 m
Support agreement: V4.0 HSP, A2DP HSP HFP
Noise reduction: CVC6.0
Bluetooth connect 2 phones.
When calling coming ,voice will tell you the number.
3.7v Li-polymer Battery, 70mAh
Noise-canceling microphone reduces background noise; Fits comfortably in either ear with a super soft earcap.
Intelligent:Automatically sensing the environment, intelligent judgment volume and to reduce the noise decibel, breakthrough to improve sound quality.
Active pairing: Super easy and fast paring with your smartphone or other Bluetooth device; Multipoint technology, LED battery status indicator Deep Sleep mode extends battery life.
The headset voice prompt the latest status at any time; open, close,connect successful,lower power, telephone tips,easy to master the various states.