Lightweight and foldable headphones that provide size defying bass and musical dynamics and deliver natural sounding audio performance with exceptional clarity. Their 30mm drive units have been designed around their size and use a unique damping system to control Mylar diaphragm movement for exceptional precision and big, extended bass. The headphones are compact enough to fit in a handbag and come with their own hard shell carry case. They offer changeable ear cushions, detachable cable with microphone and remote control and patented speaker chassis design. Frequency range: 10 Hz-20 kHz. Impedance: 34 Ohm. Distortion: <0.5%. Sensitivity: 111 dB/V. Max. input power: 50 mW. Weight: 130 g.