1. Bluetooth specification: bluetooth V4.1 ISSC2008.
2. Support protocol Headset Hands-free A2DP Avrcp, HSP, HFP.
3. Transmission scope: 10m.
4. Transmission frequency: 2.4GHz, charging voltage: DC 5V.
5. Charging time: about 1.5 hours. Talk time: over 4 hours. Music time: over 3 hours. Standby time:
over 55 hours, 50mAH.
6.Electric quantity display <support apple iphone and partial Android mobile phones>.
7. Support multi-point connection function <connect two mobile phones simultaneously>.
8. Four kinds of language (Chinese, English, French and Spanish), default English.
9. Intelligent voice number reporting, intelligent standby.