Sennheiser Electronic Corporation HMD Series Professional Communications Circumaural Headset HMD280

The HMD280-13 is based on Sennheiser's HD280 pro headphones. It features a noise-compensating microphone, left/right mounting, replaceable coiled cable, collapsible ear pieces, and lightweight design. The headphone transducers reproduce an extremely wide 8Hz-25kHz range. Cable is terminated with tinned leads. Attenuation: Max. 32 dB Characteristic SP:L 102 dB Connector: Unterminated coiled cable, min. 1m / max. 3 m Distortion: < 1% Ear coupling: Around-the-ear, closed Frequency response: 8 - 25,000 Hz Frequency response (microphone): 50 - 13,000 Hz Nominal impedance: 300 /side Sensitivity: 1 mV/Pa Transducer principle: Dynamic Transducer principle: Dynamic Weight w/o cable: Approx. 7.8 oz. (220 g)