1. Anti-wear PU skin, aluminum alloy cover 2. IP X4 Water proof, sweat proof, rain proof 3. Up to 5 hours 4. Up / Down 5. Volume increase or decrease 6. Answer / refuse / hang up the phone 7. HD sound effects and noise reduction
microphones 8. Comfort and stability 9. Compact and portable design 10. Bluetooth Protocol: HFP, HP, A2DP, AVRCP