Sennheiser SH RS 170 WEST

Impedance 32 Ω
Frequency response 18 Hz - 21000 Hz
Sound pressure level (SPL) 110 dB
THD, total harmonic distortion < 0,5 %
Ear coupling circumaural
Transducer principle dynamic, closed
Weight approx. 228 g (without batteries)
Charging time ca, 16 h
Operating time ~ 24 h
Power supply 2 AAA size NiMH rechargeable batteries, 1.2 V, 600 mAh