The bullet itself is made from food grade, hypo-allergenic, latex and phthalates free plastic. It's an 8 on the safety scale of 1-10, can be sanitized, and is compatible with all kinds of lube. It's very smooth, and almost velvety. It doesn't have any sort of texture, smell, or taste. This bullet would be great for beginners and advanced users alike. The packaging claims that it's waterproof, but I didn't test that out.
Basically, this is how it works. You have the compact:
You open it up, and there is a mirror on the top half and a black plastic base on the bottom half:
Then you open the discreet plastic base, and that is where the bullet hides:
It is the size of a regular makeup compact. The bullet inside is about 2.5 inches. The compact stays closed securely, and is great for keeping in your purse or desk. Aside from the fact that it says 'Screaming O' on it, nobody would think twice about it. But I don't think even that affects how discreet it is. I mean, who grabs your makeup out of your purse to see what brand you are wearing?
The bullet has 5 settings: off, low, medium, high, and pulsating. I need quite a bit of stimulation to achieve orgasm, and the medium setting was perfect for me. The bullet is black with a red ring where it unscrews, and then the button on the end is red. The vibrations are clearly placed towards the end opposite of the button, as with most bullets. The button is easy to push, even with lubed up hands. The toy isn't quiet enough to use in a quiet room without other people noticing, but it's quiet enough to use in a busy restaurant and not have your waiter know if he came up to the table mid-use (assuming you weren't having an orgasm).
It's a little high maintenance because it takes 3 watch batteries, which most people don't have on hand. But it does come with an extra set, which is nice. It's easy to clean... anti-bacterial soap and warm water does the trick. It is compatible with any lube you choose.