Headphones & Earphones
Sennheiser IE 100 Pro Black
Sennheiser IE 100 Pro Black, Dynamic in-ear headphones, Impedance: 20 Ohm, Frequency range: 20 - 18,000 Hz, Sound pressure level (SPL): 115 dB (1 kHz / 1 Vrms), Distortion factor at 1 kHz: < 0.1 % (1 kHz, 94 dB), Attenuation: < 26 dB, Transducer...
https://www.bizrate.co.uk/headphones_earphones/sennheiser-ie-100-pro-black-oid15503931023.html