Digital wireless headsetWireless connection: Bluetooth 5. 0 Bluetooth protocol: HFP A2DP HSP AVRCP Communication distance: 10 meters (barrier free and open environment) Continuous listening time with dual headphones: about 4 hours Headphone standby time: about 150 hours Single headset battery capacity: 40mAh Charging box battery capacity: 200mAh Headphone charging time: about 15 hours Charging time of charging box: about 2 hours Net weight of single earphone: about 4. 1g
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