Vibrator that is shaped like a bullet or an egg are the most common sex toys owned by a girl. Usually these vibrating sex toys are small and discreet but can deliver high levels of strong stimulation. Bullet and egg vibrators can have a controller with battery pack connected by a wire or be self contained. Variations include the remote control vibrators which can be activated by wireless remote control. Many of these vibrators are also microchip controlled sex toys which can provide various patterns or irregularities in the vibration, rather than a uniform wave of vibration. For example, there can be the following patterns of vibrations: pulsating, escalation, surging. This effects greatly enhances the pleasure experienced by the user.