The Ammunition is made of TPR and ABS, the packaging claims, but I'm pretty sure it's lying; I can't find any portion of it that looks or feels like it's made of TPR (except MAYBE the on/off button) so I'm calling it plastic. The plastic is smooth and textureless, except for the indent where the vibrator twists apart to reveal the battery compartment. It wouldn't be too pleasant for penetration, as it's quite little and the seam is rather rough. The plastic is odorless and tasteless.
The design is actually pretty cool; the plastic is fairly see-through so you can see the motor whirling inside, as well as the batteries. The bullet is small and discreet, easily hidden amongst chapsticks or batteries. The hard plastic wasn't my favorite for clitoral use, as it's hard, but the smooth texture made it painless. I imagine it would work very well in the cock ring system it's meant to be paired with.
*This image is larger than life. It is pictured next to a standard sized chapstick.
The toy came packaged with a sticker on the bottom--totally impossible to read against the red of the bullet. I peeled it off and it instructed me to, "Unscrew cap and remove insulator." Oh, that would be why my bullet wasn't working. Once I had that removed, the bullet was easy to control.
The bullet's on/off switch is located at the bottom of the toy; just push it once to start the vibrations, and push it again to change the pattern/intensity.
The seven patterns are:
-slow pulses, intense pulses
-quicker, weaker pulses,
-a quicker rev
To turn the bullet off, just push down on the on/off switch.
The Ammunition is also waterproof, with an O-Ring to lock out pesky water that could trash your toy. I tested it and it passed with flying colours, so swim on.
The vibrations are a higher frequency, so they're more buzzy. They are lower strength, even on their highest setting, but if high frequency vibrations work for you, this can suffice as a warm-up toy or a main event vibrator if you don't need super strong vibrations. The vibrations are very quiet, even on the highest setting.
Plastic is a non-porous material, and this particular bullet has the benefit of being phthalate-free and latex-free, as well as nontoxic. Plastic cannot be truly sterilized, so please pick up a spare if you want to share it. It can be used with any kind of lube that tickles you, though, and doesn't have compatibility issues with other materials. For daily cleaning, antibacterial soap and water will do just fine. It can be stored almost anywhere, since it's smaller than a chapstick.