This has a vacuum and vibrating function. It can stimulate your penis head and suck you up. Pardon my vulgarity, please. However, plain and simple, that's what it does. Looks like a small hair dryer. It's waterproof, holds, and is ergonomic. This can be used in the shower or tub. However, it's not submergible.

This is meant to be a masturbator. I have not orgasmed with it yet, though. It does get me up, and it feels very good. The best thing is your hand will not get tired from stroking with a manual masturbator.

It has a depth of 2.5 inches, enough to engulf your penis head. The opening is 1.5 inches wide. It can stretch a little, though.

The "mouth part is made of soft, flexible silicone. The handle is firm and covered with silicone. This picks up dust very easily. The inside of the mouth has lots of nubs everywhere. They are of various sizes in different spots. They are also silicone. I think if made of tpr they would be softer and more enjoyable. Many of my other masturbators are made of tpr.

The design is great. It has a vacuum and vibe function. This, however, may not fit larger penises. For the vacuum to work, one must get a complete seal against the abdomen. Once you are semi-erect, it will work better. I suppose as long as you can get your member in, it will work also. It will suck, massage, and stimulate the frenulum quite nicely.

I left it on the bathroom sink after washing. My wife thought it was a small travel hairdryer.

There are various sucking and vibrating patterns. Getting the right combination was important for me. Somewhere around the middle of both worked for me. Came close to orgasming. I will caution you about the strong suction on the 4th and 5th settings. The suction is very strong. I had to block the air hole and shut it off to avoid the extreme tightness.

Being silicone, the exterior is easy to clean. The interior chamber can be more of a challenge. You should pay special attention to the inner far wall. The part that touches your penis head has longer nubs. Stuff can dry up easily there. So important to rinse right after every use. Mine has a few dried flakes of lubricant in between those nubs.

Also remember to only use water based lubricant with this. This didn't come with fancy storage case. It will pick up dust if left sitting out.

Although the chamber is not that long, it can give you an erection. When you are flaccid, press it to your tummy. The vacuum will suck you up. I've tried using lube, but it didn't help me get any harder or cum. I don't plan on using lube again. It just makes the chamber harder to clean. I was able to clean it by shooting water from a sink sprayer. If you do use lube, spray the insides before the lube dries. I also tried a cock ring while using it. It did make for a nice experience.