Finally, the fun-loving dancing tube man is here in a size that fits on your small desk! Specifications: 16-inch waving tube man. Includes a fan in the base that makes it dance, wiggle, and sway just like the real thing (batteries not included). This product can be powered by a 9-volt battery or a specific AC adapter. (Neither batteries nor an AC adapter are included at the time of purchase.) When using batteries: For best performance, rechargeable Ni-MH batteries are recommended and are more cost-effective than standard alkaline (disposable) batteries. Input: AC 100-240V (50-60 Hz) Output: DC 9V (1A or 2A)