Passion just escalated to another level! These independently controlled rubber-cote bullets have 7 separate functions of vibration, pulsation and escalation. The hand-held power pack has push button controls with an EZ-Stop feature along with two plug-in jacks. Use 4 AA batteries, not included, in the power pack for orgasmic vibrations. The slim bullet measures 2" long and has a .75" diameter while the mini probe bullet is 2.25" long with a diameter up to 1.25". Double up on passion with the Passion Bullets!