... +EDR compatible with all bluetooth enabled mobile phones.2, Noise suppression and echo cancellation technology, DSP technology.3, ... the mobile by Bluetooth 11,Arc mirror, low reflection with chrome plating , nice view, no blind spot, greatly increase the safety.12,Directly ... hours 6, Earphone battery capacity: 60mAh 7, Earphone working time: 2 hours 8, FM radio frequency: 88.1 - 107.9MHz (optional ...