When the sun goes down, the fun really begins! The solar powered underwater light show turns any pool into a festive visual experience. Just press a button to turn it on, & place it in your pool. A never-ending cycle of multicolored light patterns creates an instant party atmosphere your guests will love. A built-in battery recharges by solar power, so there are no batteries or chargers required. Use it on land with the integrated hanging loop, tie it off in the pool or have it free-floating. Operates 4-6 hours on a full charge.