Probably the best known dual action vibrator is the rabbit vibrator made famous by its appearances in Sex and the City.
A dual-action vibrator may also be called a dual-stimulator or rabbit vibrator.
More About Dual-Action Vibrator
A dual-action vibrator may include a shaft for penetration and a smaller piece for more specific stimulation such as for the clitoris. Different speed settings allow the user to experiment with different sensations and types of vibration. Dual-action vibrators can be made of a variety of substances, and many are also equipped with different textures. Some versions include a rotating shaft for G-spot and vaginal stimulation, and most include a vibrating clitoral stimulator. Yet other variations include more durable shafts for anal insertion.