Sennheiser CX300S

Impedance : 18 Ω
Frequency response (Microphone) : 100 – 10,000 Hz (-10 dB)
Frequency response : 17–21,000 Hz (-10 dB)
Sound pressure level (SPL) : 118 dB
THD, total harmonic distortion : <0.5 % (1 kHz, 100 dB SPL)
Ear coupling : Ear-canal
Jack plug : 3.5 mm angled
Cable length : 1.2 m
Transducer principle : Dynamic
Weight : 12 g
Earpad size : XS;S;M;L
Pick-up pattern : Omni directional
Microphone sensitivity : 44dbV/Pa
Acoustics : Closed
Sensitivity : 118 dB SPL @ 1 kHz, 1V RMS