I got this as a couples toy, figuring it would be fun to have a small remote controlled bullet to play with. It can be used for both clitoral stimulation and insertion. If external, it doesn't stay in place without being held. Internally it can be held in place by panties without any real feel of slipping. The noise can be a bit much to be truly discreet, but you don't have to worry in a place with a decent amount of background noise.

The first awesome part is that it's made of waterproof silicone. The outside is made of soft silicone which has just a little give, making it more comfortable. It's still worth putting some lube on it to make it slide in and out easier (only use non-silicone based lubricant). The white color looks nice and is easy to clean. The retrieval cord is long enough to allow the bullet to be inserted pretty deep, without it being hard to get out. It is nice to have an easy way to remove it. I also put it in water and turned it on, and it ran without getting any water inside it.
The controller is made up of plastic, and it is solid. The buttons are well designed and they press down smoothly.
It does come with a set of batteries, which is nice. The ones included last for awhile, but it's probably wise to have backups. The remote and bullet have different batteries, so you'll need 2 12V-1 (controller) / 1 N-2 (bullet) batteries when the old ones wear out (and they do after a few hours of usage).

This bullet hits just the right size for a small discreet stimulator. The vibrating part of the bullet is 3" long, which means it's small enough for clitoral stimulation, but it can still give some sensation of penetration. The diameter is 1", making it wide enough, without being intimidating or causing discomfort.
This bullet is the perfect size for me, and I think it would be for many women, too. The retrieval tail adds another 2 1/2", including a thicker nub at the end to make it easy to grab onto. Although the outside has some contours around the middle, it doesn't add any particular new stimulation. Opening the bullet to change batteries involves putting pressure along the crease and opening the top. Even with the ease of opening the battery case, the toy is waterproof, which opens up a wide range of possibilities.
The controller is long and thin, so it can easily be hidden in a closed hand. It has 2 buttons: one for power and one for mode.
The toy is pretty discreet when inserted, which is convenient. You can easily leave the string out for easy retrieval or tuck it in for more discretion. In addition, the more modern look makes it less obvious that it's a bullet. It's quite portable for easy travel and wear wherever you want to go.

When you power it on, the toy starts in mode 1. Hitting the mode button again will cycle through options. In order, they are:
1. A soft steady vibration. There's barely any sound to be concerned with.
2. A more intense vibration. It's a bit noisier, but it's definitely worth it for the stimulation.
3. An even more intense vibration. Although it's a bit much for clitoral stimulation at this point, it's fantastic for internal stimulation. The noise is comparable to a phone in someone's purse or pocket.
4. The first pattern of pulses. It goes from a low and slow pulse to a steady intense vibration before resetting.
5. The second pattern of pulses. It's a steady intense pulse.
6. This third pattern of pulses. It's a bit faster.
7. The fourth and last pattern of pulses. It alternates between shorter and longer pulses.
As a note on the patterns, the fact that the noise alternates definitely makes it a bit noticeable.
The controls are pretty simple and straightforward. It vibrates all over, which is pretty awesome. For my partner, setting 2 was awesome for clitoral stimulation, and setting 6 for internal stimulation. That said, all of the modes are pretty awesome. The waterproof feature is pretty good, and the vibrations continue to be pretty strong under water. The remote control has a reliable range of around 20-30 feet when the toy is inserted, which is pretty awesome.

Care and maintenance are simple and straightforward. Like most silicone toys, this bullet can attract fuzz and lint. Wiping it down or using mild soap works wonders. Unlike a lot of silicone toys, there is a plastic inside, so boiling it would result in a ruined toy. It's also not a good idea to use it with silicone based lubes, so use water-based lubes instead. If you want to get better battery life, make sure you take the batteries out when you're not using them. The toy and remote can be stored in the box they came in, or side by side in a discreet place.