Transmission Range: 10 Meters Function: Power Display, Call Function, Support Music Customized Processing: Yes Printed Logo: Ok Bluetooth Protocol: 5.0 Channel: Stereo Usage: Head-Mounted Single Earpiece/Double Earpiece: Bilateral Stereo Applicable Occasions For Gifts: Advertising Promotions Color: Black, White, Green, Blue, Pink Customization Supported: Supported


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