bluetooth sunglasses,vovcig music sunglasses headsets compatible to listen music and make phone calls with polarized protection safety lenses,unisex design sport design for all smart phones ixiger technical parameters: working frequency 2.4ghz-2.480mhz comply with bluetooth v5.0 standard support music,play music continuously for 12 hours (actual test time) support phone:support phone,with microphone,continuous talk for 4 hours support voice:support voice report,support chinese and english (other languages can be customized) wireless connection range:10 meters transmitting power:glass2 support headset and hands-free profile earphone built-in rechargeable lithium battery 200mah earphone talk time:6 hours standby time:150 hours the weight is only 50g,suitable for long-term wear without fatigue;