A sexual stimulation device (1) includes a casing (2) with a vibrator unit disposed therein, the vibrator unit including an electric motor with an eccentric mass mounted on its output shaft. A connection loop (5) is integrally attached to the casing for connecting the device to the penis. A resiliently depressible button (3) is provided for switching the device on and off. A switch of the vibrator unit is bi stable so that the device is turned on and off by pressing the button (3) in the same direction.