OEM wholesale BT Earphone BT 4.1 foldable Wireless Bluetooth headphone For Android IOS

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Wireless version V4.2
Audio frequency scope 2.402GHZ~2.480GHZ ISM Band
Receiving sensitivity -80dbm
Communication distance ≥10M
Headphone capacitance 400mAh
Rated voltage 3.7V
External charging voltage DC 4.8-5.5V
Frequency response 20-20KHZ
Charging power source PC USB 5V
Charging time 2-3H
Support wireless , AUX ,TF card With LED Lights

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