7-Speed bullets are made from ABS plastic body-safe fun! These bullets are self-contained and do not have any remotes or cables. The single button on the base controls the bullet’s 7 vibration settings. The bullet is waterproof. The 7-Speed bullet measures 2.25” in length and .75” in diameter. Care Instructions: Rinse with warm water to remove lubricants and bodily fluids. Wash with an anti-bacterial toy cleaner (see our selection of Toy Cleaners) and allow to air dry. Use water-based lubricants only. Remove batteries when not in use. Batteries: 3 LR44 button cell batteries included with purchase. This bullet comes in 3 colors, silver, purple & black.