1. Bluetooth earphone with Version 4.1, stereo with super strong signal.
2. support models: A2DPAVRCPHSPHFP
3. Bluetooth wireless distance up to 10 meters.
4. Imported chips, stable quality
5.Talking time:3-5h,built-in Chinese voice prompt,dual pairing
6. Smart personality, one button for power, play, pause, call answering multi-function switch
7.Support ios headset battery indicator