Slip the 2¼” X 1″ bullet into the Silicone textured tickler for foreplay stimulation. Your mate will relish the excitement when you tease them with powerful vibration and pulsation action. Gently slide the Vibro Ring over the cock and place the bullet inside to bring a completely new level of intensity to your love life. The tear drop power pack uses 2 AA size batteries, and 1 watch size battery.