The Mini Mini Mouse is small, but packs a powerful punch. I mostly purchased it for the cute factor (I own pet mice), and definitely wasn't expecting much when I opened the box and saw how small it is, but the vibrations are actually fairly powerful. I had never used a vibrator with a cord before and I expected it to get in the way, but it's pretty long and I didn't find it to be problematic at all. I've only used it on my clit, but I suspect it'd feel good on nipples as well.

The mouse itself is made of rubber and is pretty smooth all over, with a protruding nose (feels great up against your clit!) and eyes (a little bit pokey if you accidentally shove them into your clit) and rounded ears. There is a slight rubber smell, but only if you hold it directly up to your nose.

The wire is fairly long, I keep it twist-tied because I didn't feel the need to stretch it out that much. The battery pack/control is made of plastic and fits nicely into my hand, and the control dial is easy to work (it just turns sideways and changes the vibration speed).

I really like the design of the actual vibrating portion--the eyes and nose both feel great up against my clit. The mouse itself is quite small, maybe a little under 1". I have never previously owned a vibrator with a wire and I do have my doubts about it's durability, but hey, you get what you pay for.

It's small size makes it easy to hide, and the mouse alone would not be much of a giveaway if someone were to find it, but the fact that it vibrates and is attached to a plastic battery pack would be a little difficult to explain so I don't know that I'd call it particularly discreet in that regard! The vibrator part looks and feels almost like a miniature squeaky toy for a dog.

The vibration controls are located on the battery pack. The low and medium settings are pretty low (I'd say comparable to most cell phones on the vibrate setting), but the high is much more powerful than I was expecting. I like strong vibrations and thus have not used it much on the lower settings. I found the controls easy to use. I thought having a wire on a vibrator would be irritating and that it would get in the way, but I didn't notice it at all when I was actually using it.

Since it is rubber, it is quite porous, so it can't actually be 100% sterilized, but as far as general cleaning, it's pretty easy. Just wipe the mouse down with soap and water, taking special care around the eyes and nose since those areas just out a bit.

It is not waterproof, so just be careful to not get water in the battery compartment/control area. Rubber toys are compatible with silicone and water-based lubricants, though I doubt you'd need any for this toy.