1.Bluetooth Specification: V4.1+A2DP、Class 22.Operating Frequency: 2.4~2.48Ghz3.Support Headset and HandsFree profiles、A2DP、AVRCP4.Support Multiple paired、and Connect 2 phones simultaneously 5.Support Voice Dialling on voice activation enabled phones6.Support Voice Prompt、and Report call number when the call come in7.Support 5 languages selection:English、 Italian、 Spanish、 French and German. 8.Support Full-duplex sound、and Digital Signal Processing supports Advanced Echo & Noise Cancellation 9.Talk time: up to 16hours10.Standby time: up to 45days11.Charger time: 2~3hours