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·Bluetooth version:Jieli V5.3
· Function: BT/USB/TF/FM/TYPE-C
· Output power：7W
· External magnetic horn：Φ52mm 4Ω 7W
· Frequency Response：80~20kHz
· signal-noise ratio：≥80dB
· working voltage：DC 5V 500MA
· Battery capacity：18650 /800mAh
· Play time:around 1-3 hours
