Sennheiser ie 400 pro clear

ie 400 pro clear
impedance: 16 ohms
frequency response: 6 - 19,000 hz
sound pressure level (spl): 123 db (1khz / 1 vrms)
thd, total harmonic distortion: < 0.08 %
cable length: 1.3m
transducer principle: dynamic
weight: 18 g
attenuation: up to 26 db

what's in the box:
1 ie 400 pro
3 silicone adapters (s, m, l)
3 foam adapters (s, m, l)
1 transport case
1 cleaning tool
1 6.3 mm jack-adapter