Microphone, support handsfree calling,

Audio input: Bluetooth, Aux
Bluetooth version: V2.1 + EDR
Transmission distance: 10M
Output : 3W
Speaker unit: Diameter 40mm, magnetic 4Ω,3W
Battery:  2000mAh  (18650 battery cell )
Charging Time: 5-7 hours
Playing Time:   7-9 hours


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