A stimulation device, comprising:
a pressure field generator having a flexible wall portion;
a drive unit in physical communication with the flexible wall portion so as to cause deflections of the flexible wall portion in opposing directions, thereby resulting in a changing volume of the pressure field generator,
the changing volume of the pressure field generator resulting in modulated positive and negative pressures with respect to a reference pressure;
an opening for applying the modulated positive and negative pressures to a body part;
a control device for controlling the drive unit; and
an appendage, wherein the appendage is a dildo configured to be inserted into a vagina.