This weighted puppy tail plug is a great way to know when your pup is happy. The end is weighted, so with a simple shake, the puppy tail will sway with excitement, just like the wagging of a real tail! When your puppy deserves a reward, simply use the wireless remote to send a wave of stimulating vibration deep into them. Cycle through 5 different vibration modes to tantalize, tease, and teach your puppy to come. The plug is designed to fit comfortably inside while staying in place, with a bulbous end and a contoured base designed to keep the tail upright while it is inside. Remote distance is 23 feet. Measurements: 7.5 inches in total length, 3.5 insertable, 1.8 inches in diameter, tail measures 10 inches in length. Requires (1) 23A-12V battery, included, and (2) AAA batteries, not included. From XR Brands.