Bluetooth solution:Bluetrum8812- (with FM function + TF card)
Bluetooth version: V5.0
Charging box battery capacity: 200mAh
Playing time: 23H
Call distance: ≥10m
Resistance: 16Ω ± 15%
Speaker diameter: φ10mm dynamic driver
Sensitivity: 103 ± 3db
Frequency range: 20Hz ~ 20KHz
Headphone charging time: about 2H
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