Great value: water games are a kid-powered handheld game that doesn't require batteries for unlimited play and entertainment Perfect entertainment toy: our water games are excellent diversions of boredom on long road trips, sitting in a waiting room or just for fun on a rainy day Travel: Easy to bring anywhere and pack away due to it being lightweight and being 6 x 1 x 3 inches No batteries needed: just push down on the control pad and watch the colorful rings do their thing. Safety: for 3 years and up, do not drink the water inside or leave it in below freezing temperatures