1. Bt3.0 HSP, HFP Supported
2. When connect with phone with Bluetooth function can realize hands free calls handling
3. Automatically/vox answer, reject, hang up calls
4. Support voice dial and last number redial.
5. Support GPS connection
6. Support stereo music play/pause, forward/backward
7. Optional FM radio frequency function covers 76~108MHz
8. Use DSP noise cancellation technology
9. 800m intercom distance
10. Waterproof housing, build-in installation
11. Compatible with various kinds of helmets
12. Long life lithium battery (500mA/3.7v)
13. 1 year warranty