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K20 Bluetooth Earphones Argument
Bluetooth version: 5.3Speaker: φ8mmHeadset battery: 45mahStorage battery: 200mahShutdown standby time: about 6 monthsMusic time: 5 hoursTalk time: 5 hoursCharging time: about 40 minutesCharging time: about 1 hourCommunication distance :<10MCharging interface: Type-CCharging voltage: DC5V/1AColor: Black