Let this little hummer send your sensations soaring! The Xtreme Kit comes with a battery operated power pack, a 2.5" x 1" bullet, and a 1.75" x .625" micro bullet. The two interchangeable bullets each have a soft rubber cote. You control the vibrations with the Xtreme speeds and functions up and down buttons. The power pack also has a simple to use EZ on/off button. The ah-inspiring vibrations are powered by 2 AA batteries, not included. Enjoy the extreme buzzing from either one of these bullets!