This is a dual purpose vibrator. Once inserted, it provides both G-spot and clitoral stimulation. Of course, there is no need to insert to stimulate ONLY the clitoris. This one is primarily for the ladies, but your man can enjoy a bit of the vibration if you want to dry-hump.
This is great to either warm her up, or have her finish herself off.

This puppy is silicone based, and has a slight odor. Also, the material is slightly porous. It's covered in smoother bumps. We couldn't tell if this was just the material, or if this was part of the internal stimulation. This would be good for anyone, just be careful how you adjust the vibrator dial.

The design is sort of a catch twenty-two. While it is fantastically helpful once inserted, GETTING it inside her is a tad difficult. The curvature of the dolphin and the dorsal fin, both make it necessary to lube it up, or else she needs to be DRIPPING wet in order to get it inside. I, the boyfriend, first scoffed at the size, it seemed so small. However, it curves perfectly to wrap around to that elusive G-spot. It's fairly small, definitely easy to hide. As for experience level, I recommend that if a beginner buys this that they take it SLOWLY. Going crazy and fast might seriously injure.

The vibrations resonate throughout the entire piece, but are centered in the inserted bullet in the back of the dolphin. From there, they spread, dulled down, to the nose and tail, which rest on G-spot and clit respectively. The control knob on the bullet is easy for someone looking at it, but not as easy by feel. At high speeds, it apparently is so powerful that numbness may occur.
It isn't too noisy when inside her, but the thing makes a bit of noise outside.
We did not test in water, but it looks like it would be just fine as splash-proof.

It's silicone based, so to clean, wash with soap and hot water. Store carefully as it will pick up dust, lint, or hair, and no one wants that inside her.