M9 wireless bluetooth headset magnet attraction bluetooth earbuds handsfree in ear sports earphones for iphone samsung
Operation voltagev30v 42v modelm9 input voltage v37 cable lengthcm60cm power supply37v materialmetal rubber plastic typein ear general usesports fitness functionsports volume control with microphone bluetooth noise cancelling communicationwireless bluetooth connectorsusb memory capacitynone speaker diameter12mm speaker sensitivitydb1033db speaker frequency response20hz 20khz microphone unit4mmx15mm microphone spl383db10w01m microphone imped
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