[Neil Middlemiss]

The PXC 250 is a closed, dynamic, supra-aural mini stereo headphone with NoiseGard active noise compensation. Due to their active and passive attenuation of ambient noise, they let you enjoy music even in noisy environments. The headphones are foldable and come with a convenient belt pouch, making them an ideal travel companion.

Features
Dynamic stereo mini headphones
Fold and flip: registered design allows the ear cups to be turned through 90° and fold the headphones closed (headphones will lock in open and closed positions)
For transport: supplied with soft belt pouch with extra pocket (185 x 105 x 40 mm)
1.8 m Kevlar-reinforced OFC copper cable with 3.5 mm jack plug, delivered with an adaptor to 6.3 mm
(1/4") stereo and 3.5 mm double mono (for airline audio)
Ideal for aircraft and other environments with engine noise: the switchable NoiseGard active noise compensation attenuates frequencies below 1,000 Hz by up to -15 dB
High-resolution sound due to Sennheiser "Duofol" diaphragms with spiral embossing
Bass tube for powerful, punchy bass
Lightweight: only 65 g without cable
Requires (2) AAA batteries for NoiseGard operation

Specs
Transducer Principle Dynamic, closed
Frequency Response 10-21000 Hz
Nominal Impedance 300 Ohm
Weight Wo Cable 65 g
Characteristic Spl 106 dB(SPL)
Ear Coupling Supra-aural
Distortion 0.1%