Sennheiser HD 2.20S Portable On Ear Headphones. 

The HD 2.20s headset delivers Sennheiser sound quality and maximum portability for a truly satisfying listening experience on the go. The compact on-ear design sits securely and comfortably.

The HD 2.20s is made to make your mobile life more pleasurable. That’s why it is so slim and lightweight and sturdy at the same time. It features a single-sided, tanglefree cable, which comes with a built-in special treat: a onebutton smart remote plus microphone that lets you take calls and playback music. Last but not least, thanks to its foldable headband you can stow the HD 2.20s away easily – should you ever want to.

As slim and elegant as the HD 2.20s is to the eye, as stunningly powerful it is to the ear. Its closed-back on-ear design attenuates ambient noise, creating the stage for a great sound reproduction with a punchy bass response. Thanks to the extremely comfortable premium leatherette earpads you can enjoy this experience virtually endlessly.

Color black 
Impedance 26 O 
Frequency response (microphone) 100 - 10,000 Hz 
Frequency response 18 - 18,000 Hz 
Sound pressure level (SPL) 112dB (1kHz/1Vrms) 
THD, total harmonic distortion <0.5% (1kHz/100dB) 
Ear coupling On-Ear 
Jack plug 3.5mm angled plug 
Cable length 1.4 m 
Transducer principle Closed 
Pick-up pattern Omni directional 
Microphone sensitivity -44dBV/Pa