Sennheiser SH RS 180 WEST

Impedance 32 Ω
Frequency response 18 - 21 000 Hz
Sound pressure level (SPL) 110 dB
THD, total harmonic distortion <0.5 % a 1 kHz, 100 dB SPL
Ear coupling circumaural
Transducer principle dynamic, closed
Weight approx. 204 g (without batteries)
Charging time ca. 16 h
Operating time ~ 24 h
Power supply 2 batteries AAA NiMH rechargeable