Which came first? The egg or you! The Waterproof Remote Egg is made of plastic and can be used anywhere. The 3.25in x 1.25in egg requires 2 AAA size batteries (4 included) and has a wireless antenna. The controller has a single button operation and requires one 23A size battery (2 included) to provide the egg with 10 separate vibrating functions. The Remote Egg has a range of 12 feet, allowing you to wear it to a dinner party or pool party for some added excitement!