The rabbit part of vibrator contains a bullet which vibrates the "ears" around your clit. Just a warning- The sensations from a vibrating rabbit aren't nearly as strong as the vibrations in a hitachi (i noticed you reviewed one). The shaft and rabbit on his particular model only vibrate. This type of information can be found on the product page under the properties tab. You could also read some of the reviews, as they usually include that type of information.

"what if your sensitive spot isn't perfectly aligned with where your clitoris is?"
- This is the big problem many women have when buying rabbits. I have tried 5 rabbits, only one of which fit me right. Most of the rabbits are flexible so they can fit more women, but you also need to factor in the insertable length of the shaft, girth, plus motor speeds & function.

I would love it if someone made a "rabbit measuring kit" for women so we could have a better idea of what size we need before buying. This would be especially useful because of the nature of these products; it's not like returns are plausible if they don't fit properly.