Sennheiser PX 200

PX 200 - Streetwear Headphones The closed, dynamic, supra-aural PX 200 mini headphones are an ideal choice for mobile audio sources. Their excellent isolation lets you enjoy music without being disturbed or disturbing others. Folded and packed into their rugged transport case, these headphones will accompany you anywhere.
Fits into the shirt pocket: rugged transport case with cord take-up
(145 x 75 x 27 mm)
Ideal for use in coaches, trains etc.: excellent passive attenuation of
ambient noise (–15 to –25 dB for frequencies above 1,200 Hz)
High efficiency and powerful reproduction
Adaptive baffle damping (patent pending)
Comfortable headband with split padding
Rugged and durable: robust steel headband with metal joints,
steel-reinforced headband ends, connection to the ear cups tested
for durability