Rocky The Singing Lobster: Sings and Dances-Also A Motion Detector Shakes, sings and dances with a button or motion-detector Sings "Sea Cruise" and "Rock The Boat" Wiggles his tail and shakes his claws as he sings Actually moves his lips Works with 120-volt A/C, 6 V DC adapter or 4 AA batteries (both not included)