Bluetooth variation V3.0+EDR.
Transmission power Class2.
Radio frequency:2.402 -2.480 GHz.
Transmission distance 10m ~ 15m.
Charging time 3 hours.
Low power, the optimum working present
The flexible design,light frame and legs,even more lighter than many Ordinary sunglasses,the arc structure was designed according to the head,willnot chuck and loose.
Using high-end polaroid polarized lens,Effectively prevent ultraviolet light,You can see more clearly with this sunglasses in the sun.
Using the CSR high-end chip,Can realize make and answer the Call easily.
Support voice navigation.
Conversation time:12~15 hours Standby time:more than 200 hours.