Patent ID: 8107663

Claim:
A headset, comprising: a hollow housing having a front wall with at least one sound hole formed thereon, and a rear wall facing the front wall having a plurality of air holes formed thereon; a loudspeaker unit disposed in the housing and adjacent to the sound hole; and an adjustive component rotatably mounted to the rear wall of the housing, the adjustive component having an adjustive switch outside the rear wall and a blocking slice against an inner surface of the rear wall and connected with the adjustive switch, the adjustive switch capable of controlling the blocking slice to swing and halt repetitiously, for altering the number of the covered air holes when the adjustive switch is driven to rotate; wherein the adjustive component has a main body of column shape and a blocking element, the main body passes through an installing hole defined at a substantially middle portion of the rear wall, the adjustive switch is connected with one end of the main body, the blocking element has a beam of which one end is connected with the other end of the main body, and the blocking slice is of substantially half-ring shape and connected with the other end of the beam by a middle portion of an inner side of the blocking slice.