Feature1, Bluetooth V5.0, support most of bluetooth devices and lower power consumption2, 2600mAh charging case can full charge 2 earphones around 8 times, offer more 30Hours musci time3, With waterproof technology, no need to worry about water and sweat anymore4, 10mms dual drive units, enjoy 9D strong deep bass music sound5, Popular touch control function, support switch songs, phone call and call voice assiatant.Bluetooth Version: V5.0Frequency:2402MHz-2480MHzNominal impedance:32Battery capacity:Headset:40mAhCharging case:800/1600/2600mAhCharging input:5v/700mACharging time:about 6-8hoursWorking time: Talk time 6-8HMusic time:6-8HStandby time:30daysPackage included: 2 pcs earphone(one pair) 1 pc charging case 3 pair earplug 1 pc manual