M10 tws wireless headphones 5.1 bluetooth music earphones ipx7 waterproof sports earbuds 9d hifi stereo headset for smartphone product specification: 1.model:m10 2.bluetooth specification:v5.1 3.material: abs 4.bluetooth profile:a2dp,avrcp, hfp;hsp 5.working voltage:3.1v~4.2v 6.charging voltage:5v-1a 7.battery capacity of the headset: 50mah 8.battery capacity of the storage box:2000mah 9.transmission distance:10m 10.call time:4-5h 11.play time:4-5h 12.waterprof :ipx7 13.charging time of headset:1 h 14.charging time of the charging box:2h 15.support system:all bluetooth devices and mobile phones; feature: high-definition led display, automatic boot pairing, magnetic charging compartment, binaural call, cvc8.0 noise reduction, hifi stereo, 3d touch control, bluetooth 5.1, ipx7 waterproof products include 2* bluetooth earphones 1* charging case 1* usb cable 1* user manual