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Communication distance: about 20 meters (under barrier-free environment)
Bluetooth version: V5.0+EDR
Earphone working time: about 3 hours
Headphone standby time: about 50 hours
Charging time: about 2 hours
Battery type: polymer lithium ion battery
Support protocol: HFP/HSP/A2DP/AVRCP
Headphone battery capacity: 3.7V 50mah
Headphone charging time: about 1 hour






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