Наушники KOSS SW 20

Stereophone with dynamic microphone for hands free communication from your personal computer
Dynamic element for extended frequency response
Dynamic microphone for optimized pick-up pattern. Requires no external power supply or battery power
Microphone Impedance: 600 ohms
Foam earcushions for open, hear-through sound
Adjustable headband for best fit
Straight, dual entry 8 foot cord

Frequency Response 20-20,000 Hz
Cord Straight, Dual Entry, 8ft
Plug 3.5 mm/6.4 mm
Impedance 60 ohms (stereophone)
Weight 2.0 oz.
Sensitivity 100 dB SPL/1mW
Distortion <0.3%
Ear cushions open