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The earphones are so called canal type earphones and their maximum rated power is 20mW. 105dB per mW sensitivity for the earphones unit and frequency band 20Hz to 20kHz. The listed impedance is 24 ohm and these earphones sport the regular 3.5mm jack which you can plug in whichever device you want basically, as long as it has the 3.5mm earphone jack, of course. There are also three buttons available here like volume up, volume down and answer call button.