Lens：polarized lenses，UV400 Lens material：Resin Frame material：ABS Bluetooth receiver range：10M VER：V4.1+EDR Continuously playing music time：3-4hours Continuous talk time: 7-8 hours Standby time: 150 hours Audio frequency:20Hz-20KHZ Lithium battery：Built in 180mA polymer Maximum input voltage： 5V/DC 500mA Storage temperature：-20°C-80° Press the button in the middle,switch on bluetooth. Double press the button close to glasess to use camera shutter function Remark:There is no charger for this glasses,we only provide Charging cable Wireless Bluetooth Headset device to answer phone and listen to music
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