[. . . ] [. . . ] Easy way to do things Specification: Name of product: HEADPHONES EASYTOUCH ET-253 FIREBALL + MICROPHONE Cable lenght: 2, 5 m Connection type: Mini jack Features: smooth volume regulation regulation of microphone location full compatibility with all the most known sound cards high quality speakers of headphones wideband microphone with noise suppression Headphone impedance: 32 Ohms Headphones frequency range: 20-20, 000 kHz Maximum output power: 120 mW Microphone: 0 dB=v/Pa at 1kHz-58dB Microphone frequency range: 30-16, 000 kHz Microphone impedance: 2, 2 kOhm 1/1 [. . . ] [. . . ]