noun which may take the genitive case particle 'no', noun
canal-type; in-ear; closed-fit
Describes earphones or headphones that insert into the ear canal. Often contrasted with インナーイヤー型 (inner-ear type) which sit in the outer ear.
See also: インナーイヤー型
Canal-type earphones have high sound isolation.
Wireless canal-type earphones are popular these days.
From English 'canal' plus 型 (type). A modern compound used primarily in audio equipment contexts.