Bluetooth version: V5.0+EDRWireless frequency: 2.4GHZSupporting agreement: A2DP1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.3Transmission distance: 10 metersBattery capacity: 50mAhCharging voltage / current: 5V / 1APlay / talk time: about 4 hoursCharging time: about 1 hourStandby time: 120 hours2, charging bin parametersInput voltage / current: 5V / 1ABattery capacity: 1500mAh, 2600mAhGross weight: 69 grams