Specification:
1) Bluetooth version: V1.2
2) Frequency: 2.4 - 2.48GHz
3) Support almost all mobile phones with built-in Bluetooth devices
4) Function buttons: Receiving, hanging up, pairing, turning on, turning off
5) Special functions: Voice dialing, re-dialing, mute, rejecting
6) Operation range: 10m
7) Security: Pairing, encryption, authentication
8) Battery type: Rechargeable lithium Battery