Hello-
The MX 85 is an earbud headphone, while the CX 380 is an in-the-ear-canal headphone. The CX 380, thus, blocks noise. The MX 85 uses a Twist-to-fit holding mechanism to stay in place. They come with the same accessories and warranty.
14 years, 5 months ago
by
Posted by:
TheSennheiserSoundGuy
from
Old Lyme, CT