The LX-3 is a rechargeable prostate massager. It vibrates in the shorter stem, but the vibrations don't carry that well into the insertable head. It is waterproof, and it is made of hypo-allergenic silicone. The material attracts a lot of pet hair, so be sure to store it in something to help keep it clean. The charge last quite a while, and the vibrations are amazing. They are a bit buzzy on the higher settings, but it is super powerful. If you have been looking for a luxurious boy's toy, the LX-3 is a perfect choice.