Adam and Eve Thumper Vibrator is powered by a special motor. The Thumper delivers low-frequency vibrations that are stronger and more intense than your average vibe. These low, rumbling vibrations reach deep inside your body - stimulating sweet spots you didn't even know about! The powerful vibrator features 7 different vibration modes, including multiple speeds and pulsating patterns. This variety of sensations lets you enjoy your vibrator whether you're using it for foreplay with a partner, by yourself or just need something to send you over the edge. Press the power button in the base to turn it on and cycle through the vibration modes. Hold the power button down for several seconds to turn it off when you're done. The Thumper Vibrator is fully waterproof so you can use it almost anywhere - whether you're taking a shower or relaxing in a hot tub. The waterproof vibrator is also easy to clean since you never have to worry about accidentally getting water inside. Insertable shaft measures 1.5 inches wide and 7 inches long Overall (vibe/toy) measures 1.5 inches wide and 8.5 inches long Made from firm ABS plastic with a silky smooth finish for your comfort Powered by 2 AA batteries, (not included) 5 year warranty.