MODEL: HP-257
MULTIMDERIA HEADPHONE/MICROPHONE
	Impedance: Microphone U=3V;R=1.5 KOhms;Headphone 32 Ohms
	Frequency Response:20Hz-20KHz
	Dymamic stereo headphone w/MIC
	Reted Power :100mw
	Power handing capactity:1000mw
	40mm ferrite dreiver units
	Volume control