Abstract: A device with a rotation effect includes an external barrel, a rotation barrel, a rotation mechanism, a pressing mechanism and a deceleration mechanism. The rotation barrel is disposed in the external barrel. The rotation mechanism connects with the rotation barrel for rotating the rotation barrel. The pressing mechanism connects with the external barrel. The deceleration mechanism connects with the rotation barrel to reduce the rotation speed of the rotation barrel.
Abstract: A computer mouse providing the functionality of a vacuum cleaner comprises a main mouse body and a vacuum device. The vacuum device is substantially mounted inside the main mouse body so that the shape of the computer mouse having the functionality of a vacuum cleaner is substantially that of the main mouse body. A user can use it as a mouse or as a vacuum cleaner to, for example, clean a computer keyboard.