Since the rabbit’s appearance on Sex and the City, this vibe has become an international sensation. From California Exotic:

Waterproof Jack Rabbit
“The Original just keeps getting better, and better, and better!
100% waterproof for fun in or out of the water. The playful rabbit with its synchronized rotating metals beads and reversing action has 3 speeds of vibration, 3 speeds of rotation, and one touch activation.
Made out of jelly rubber, this vibe is firm, yet soft and supple to provide comfortable contact and stimulation.
The waterproof Jack Rabbit features the traditional rabbit shaped clit stimulator which has three contact points for vibrating stimulation, the two ears and the bunny’s nose, to help you reach orgasmic ecstasy.
It also features an independently rotating shaft that has metal beads inside that will not jam up. The beads rotate on a central pivot point, as you will find in other rabbit style vibes from California Exotics, which makes for a longer lasting rotation than loose pearls or beads inside the shaft. And best of all, these beads can rotate whichever way you want as the vibe features a reverse rotation button.
The EZ load battery case twists into the bottom making it a snap to swap out the batteries.
The Jack Rabbit is 10 inches of total length with 5.5 inches of insertable length.
The toy requires Uses 3 AA batteries, not included.”
Try one out and you’ll see why it is so popular!