Silken silicone surrounds the incredibly powerful remote control Egg with 10 patterns of waves and pulses, operable from at least 10 meters away. It features a user-friendly frequency-back function; press the button twice within a second to return to the last frequency. The product is 100% waterproof, having passed 2 hours of testing in the tub. Length: 3.5 inches. Circumference: 4.5 inches. Battery Info: Requires 2 x AAA batteries for the remote controller (not included); the egg has a rechargeable battery. It comes packed in a luxury gift box with white EVA foam inside.