Bluetooth version: Bluetooth V5.0
Bluetooth protocol: A2DP/AVRCP/HFP/HSP
Audio decoding: AAC/SBC
Effective distance: 10m
Frequency response range: 20Hz-20KHz
Rated input: DC 5V 38mAh (headphone) 360mAh (charging box)
Working hours: about 3h (headphones) + 15h (charging box)
Charging time: about 1h
Working temperature: -10~55℃
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