This has become my favorite solo play toy. Although it would be nice if the vibrations of this toy were stronger, what it offers is enjoyable, especially when coupled with the rotation and warming features (all individually controlled). One full charge, via USB, provides for a few short play sessions or a couple of longer sessions.

Rotation - The toy features a rotation action for the head of the penis. The action is between the silicone sleeve and the outer shell, so there should be no risk of injury, but having plenty of lubrication allows a better motion for more enjoyment. Ideally, this motion would be deeper than the end one inch. Shorter endowments might not get much out of the action. Warning - The rotation motor is loud.

Warming - There is a warming feature to make the sleeve a more comfortable temperature. If the warming is started with the lubricant inside the sleeve, before penile entry, the lubricant can be warmed, too.

Vibration - The first three vibrations are simply different speeds, then there are three pattern options. I assume no vibration is the seventh mode. The vibrations do not make much noise but could be more powerful.

The opening of the toy is 1.25-inches in diameter and the sleeve can accommodate the first few inches of the user's penis. A thinner penis may not get much out of this toy. Although tight, the toy seems like it can handle an inch-and-half or so diameter penis. Lubrication is definitely needed.

Easy Cleaning - The water-resistant design makes this toy easy to clean. I use a soft-bristle toothbrush to help clean the ridges in the sleeve, with mild soap and warm water. The nine-inch length of the toy can make using a bathroom sink difficult.

Lubrication is essential when using this toy for stroking. The first time I used it, I didn't use enough lubricant and as my penis became engorged, the toy became uncomfortable to maneuver. Fortunately, the vibration and rotation features are enjoyable enough that I was able to reach orgasm without stroking.