Feature: 1. Can connect two phones simultaneously 2. Voice Commands. 3. Custom mobile charging cradle / carrying case. 4. Extended battery life. 5. High-fidelity sound and voice quality effect. 6. Supports Bluetooth-compatible: Headset Profile, Hands-free Profile (DSP technology). 7. Support Bluetooth-compatible stereo music playback. 8. Bluetooth-compatible 4.0 version, can be simple pairing safely. 9. Can be casual talk while driving / working or walking.