Bluetooth version：5.1
Chipset：Jieli
Bluetooth distance：10-20m
Frequency response: 20-200kHz
Product material： ABS
Charging time：1 hour
Talk time：5 hour
Music playing time：5 hour
Headset battery：40mAh
Charging compartment battery：400mAh
Earphone size：20.56*18*35.43mm
Charging chamber size：52.8*48.3*26.63mm
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