... power on/off: To power on: When uses the blue tooth, press and hold answer/end key for about 3seconds until ... If pairing was successful,indicator light starts to flash blue,indication in sandby mode and ready to make/receive calls ... : Bluetooth rev.: V1.2Emissive power Rate: Class2Support agreement: The blue tooth earphone, exempts raises, transmission: Wireless transmission scope: 10 meterCenter ...