| 摘要 |
An earmuff which is adapted to covering a driver includes a first case having a first through hole and a second case having a second through hole. The second case accommodated within the first case to form an inner chamber where the driver is disposed therein. Since air flows between the first case and the second case via the first through hole and the second through hole, a satisfactory ventilation effect can be achieved and thus feeling of being at ease can be furnished. |
