S520 super smallest mini earphone wireless bluetooth 40 headset stereo music in ear plug headphones
Operation voltagev5 v models520 input voltage v5 materialplastic typein ear general usemobile phone cellphone functionbluetooth with microphone communicationwireless bluetooth connectorsusb memory capacitynone driver typeelectromagnetic sound channel10 bluetooth versionv40 transmitting power2x16mw operating rangem10 m talk timehours10 h standby time hours100 h
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