Sennheiser HD 25-1-II by adidas Originals:

The true instrument of professional DJs…adidas has given Sennheiser’s supreme DJ headphone a makeover. These headphones are purpose-designed, professional monitoring headphones offering high attenuation of background noise. Capable of handling very high sound pressure levels and made from extremely robust construction, these headphones perform exceptionally well in high-noise environments. The result: crystal clear highs down through rumbling lows. Along with the lightweight and comfortable design, these headphones ensure an original sound experience.

Headphone package includes:
1 HD 25-1-II headphone
1 Carry bag
1 extra pair soft ear pads
1 adaptor to ¼ ? (6.3 mm) stereo jack plug

Technical Features:
Cable length: 1.5 m steel cable
Plug: 3.5 / 6.3mm angled stereo jack
Rotatable ear cup for one-ear listening
Weight w/o cable: ca. 140 g
Frequency response: 16-22,000 Hz
Impendance: 70 ?
Ear coupling: supraaural
Transducer principle: dynamic, closed
Max. Sound pressure level (aktiv): 120 dB SPL (1 kHz, 1 Vrms)
Load rating: 200 mW
THD, total harmonic distortion: < 0,3 %
Contact pressure: ca. 2.5 N