The 3" Platinum Power Bullet has Variable Speed control. Simply press and hold the button down and feel the vibrations increase. When the desired speed is found, let go of the button. To go higher, simply press and hold the button again. When you want to turn it off, press and release the button quickly.
Along with being wireless and waterproof, the Platinum features a glowing LED button with an attractive upgraded flat button, making it easier and more comfortable to use.