A stimulator for stimulating human female genitalia including an electrically powered vibration device and a first external massage surface for engaging the genitalia which is vibrated by the vibration device. The first massage surface includes a first surface portion surrounding a protrusion which extends above the first surface portion. The first massage surface is provided with two adjacent surfaces areas having different vibrational characteristics, a first surface area provided by the protrusion and a second surface area provided by the first surface portion surrounding the protrusion.
