Transmission range: 10 meters
Function: Battery display, voice control, call function, support music, LED display
Channel: Mono
How to use: Earbuds
Whether single or both ears: unilateral hands free
specification:
Black 2000 mAh (button version + LED display)
Black 5.0 Standard Edition 2000 mAh (requires manual power on,the Actual battery capacity ) 
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