| 摘要 |
PROBLEM TO BE SOLVED: To provide an insertion earbud type earphone device which realizes more effective noise isolation, improved consistency of fit and performance, and the like.SOLUTION: The earphone device comprises: a first casing 401; a movable cap 403 disposed outside the first casing 401 such that a hollow tube penetrates through an opening of the movable cap; a compressible elastic material 405; and a manually operated component 402 connected to the first casing 401 but separated by the movable cap 403 from the compressible elastic material 405, and configured to move the movable cap 403 in response to a manual operation. The movement of the movable cap 403 relative to the hollow tube compresses or restores the compressible elastic material 405. |
