Clitoral stimulation usually rocks the house, considering the nerves follow to the back of the anal cavity up to the perineal sponge. If you want to turn that entire area on, a clitoral vibrator is usually what you need to get those great clitoral orgasms. In comes the waterproof RO-100mm also known as "sensual touch ammunition". It's design is simple, living up to the 'bullet' description. Upon opening you will notice the bullet is encased in a clear plastic storage case. Unscrew the bottom of the case and out slides your RO-100mm. Measuring in at 4" inches tall total, 1 1/4" being the silicone soft tip. 2 1/2" inches around the base, tapering to 1 1/2" inches towards the top. the battery is covered by a protective paper (you must remove this in order to turn the unit on). The bullet consists of 3 pieces:

(1) The chrome plated plastic body, which is very smooth with the exception of the large imprinted "RO-100mm soft tip" design along the side. It does take notice of your body temperature and adjusts according. Considering the body actually plastic and not metal (looks can be deceiving) it doesn't hold onto the temperature as you would imagine, but it usually stays at a comfortable level and never is freezing or hot to the touch. Because the body is smooth and non porous it does becomes slippery with moist hands. The chrome plating is clearly an overlay and I do expect it to chip over time. For now, it looks nice.
(2) The soft touch clit tickler is made from silicone, it has a velvety feel and a matte sheen, in my case, the red, seemed to be colored deep and vibrantly, unlike most toys which are pastels or muted. It didn't seem to attract much lint. Then again, it has aways been been stored in its case. It had a slight amount of flex, and not a lot of bounce. Promising to stay in place when pressure was applied, it complied and stayed still.
(3) The removable bottom: which opens up to th battery compartment. The RO-100mm takes one LR1 battery, which is included. The little base has ridges along the sides like a quarter. These ridges could get gross if not cleaned throughly. Here in the middle is the recessed soft plastic push button control, which matches the color of the tip. It's soft and presses easily.

The overall feel is nice; it fits comfortably in your hand, and is lightweight, only weighing 30 grams. There is only one control which is located under the battery compartment. It is a soft plastic and is raised enough not to get lost in the moment. Whilst gripping the RO-100mm in your hand your thumb can easily cycle though the functions.
-Press the button to turn on.
1) steady strong 2 vroom vibrations
2) steady strong 3 vroom vibrations
3) pulsing strong 3 vroom vibrations
-Hold the button to turn it off.

The vibrations are strong and go at super sonic speeds, there is no lag. Yet, you can feel the vibrations more so in the base of the bullet rather then the tip (where they should be), after being on for an extended period of time your hand may become numb. If by chance the vibrator is on and placed on a bedside table or elsewhere it will be loud, due to the hard plastic casing. While in action, when held it is very quiet and discreet. The packing was minimal, just some shrink wrap around the case, you will also find an instruction booklet glued (it's removable) to the side of the case. It shows you how to insert the battery and how to use the functions in 12 different languages.

To safely clean this toy, remove the batteries and replace top. In order to keep the seal waterproof, make sure to the top is completely on. Wipe the toy down with warm soapy water, rubbing alcohol, toy cleaner or a 10% bleach mixture. Rinse and let dry.

Always keep your toys completely clean, dry and battery-less when storing.

Use condoms when sharing or switching orifices to fend off bacteria and UTI's.

Use only water based lubes as silicone lubes tend to bond with silicone toys. Also, do not store with other silicone toys as silicone likes to bond to other silicone materials.

Starting off I made direct contact from the soft tip to my clitoris. This felt great texturally, but the vibrations were muted and weak. I moved it around to find "the spot" without luck. Although, I never did get to the peak of orgasm. I did find that where the body of the bullet meets the silicone the vibrations were stronger. which let a soft vibration out onto the outer areas of my vagina, this felt great. Not enough to send me overboard, but lovely for foreplay or teasing while tied up. Using it in other ways, such as the exterior of the anus and vulva felt fantastic, unfortunately the result was the same--no orgasm. Nipple play was phenomenal and even pressure point massage with the bullet was dandy. In my case, it just wasn't powerful enough. I will admit, I am seasoned and spoiled by vibrators. I almost always need at lest a 4-5 vroom to get me off. Just because this bullet didn't work for me, does not mean it wont work for you. While in use the controls are great, the build is solid and there really isn't anything wrong with the vibe, it just comes down to not being powerful enough--for me.

Ahh, well. It's still fun, and I have a feeling that having it in my purse, it will be pulled out and used, I think if you were already close enough this guy would top you off just fine.

Meh. It's a dust collector now. Every once in a blue moon I will pull it out, only to be underwhelmed.
If light teasing vibrations are your thing, then give the RO-100mm a whirl. Otherwise find something different. It's too bad, that it's no good (errr not powerful enough) since the material is very soft on your clit. I did find a decent and powerful replacement, for those who are curious check out the Speeding bullets armor piercing tiny vibrator.