1. Bluetooth earphone with Version 4.1, stereo with super strong signal.
2. support models: A2DP、AVRCP、HSP、HFP
3. Bluetooth wireless distance up to 10 meters
4. imported chips, stable quality
5. Power switch,side volume up and down and up and down the song button
6. Talking time:3-5h,built-in Chinese voice prompt,dual pairing
7.Support ios headset battery indicator