Sony MDR-201V

Lightweight open-air headphones are comfortable to wear, even for extended periods; also allows you to hear ambient sound
Volume control on headphone cord lets you adjust the music, even if you're not close to the source components-or if your Walkman® portable stereo is hidden away in a pocket
30 mm diameter drive units are larger than most headphones for noticeably deeper bass, lower distortion and wider dynamic range; frequency response extends down to a low 14 Hz
Ferrite magnets for high energy in a modest size; help produce ample sound output-100 dB sensitivity
PET diaphragms ensure high rigidity for minimum distortion; low mass for high-frequency response all the way out to 20,000 Hz
Sony Acoustic Turbo Circuit for high efficiency; gets high sonic output from your portable stereo; extends bass response
Single-sided cord minimizes headphone cord tangles and nuisance
Sony UniMatch plug with fixed mini plug for portable use and phone plug for home use
Type Open-air, Dynamic
Drive Unit 30mm
Diaphragm PET
Magnet Ferrite
Impedance 24 ohms
Sensitivity 100dB
Power Handling Capacity 100mW
Frequency Response 14 - 20,000Hz
Cord Single-sided, 4.9 feet (1.5m)
Plug Straight stereo mini plug; UniMatch adapter with stereo phone plug