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Bluetooth version: V5.0+EDR
Wireless frequency: 2.4GHZ
Support agreement: A2DP1. 3 / HFP1.6 HSP1.2 / AVRCP1.6 / D11.3
Transmission distance:10 m
Battery capacity: 50mAh/350mAh
Charging voltage/current: 5V/1A
Playback/talk time: about 3 hours
Charging time: about 1 hour
Standby time: 60 hours
32 Ω speaker impedance: phi 10 mm
Microphone sensitivity: -42db
Operating temperature: -10-50℃
Full set weight:90g
Bare weight :30g
Color:black,white