Warm beanie hat wireless bluetooth smart cap headphone headset speaker mic for iphone sumsung cellphone
Operation voltagev22v 43v modelbt 1 input voltage v42v cable lengthcm20cm materialtextile typein ear general usemobile phone cellphone functionsports volume control with microphone communicationwireless bluetooth connectorsusb memory capacitynone speaker diameter12mm speaker sensitivitydb853db speaker frequency response20hz 20khz microphone unit4mmx15mm microphone spl353db10w01m microphone impedancekohm2000 microphone frequency response2
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