Using the Tangle Creations NightBall is a breeze. Just start playing as you would with a regular basketball. The motion - activated LEDs will light up when you toss, bounce, or roll the ball. To replace the batteries, simply find the easy - access battery compartment and swap them out. Remember to use the recommended battery type for the best performance. When not in use, store the ball in a cool, dry place. Since it's water - resistant, you can play in light rain, but avoid submerging it for long periods. Also, keep it away from sharp objects to prevent damage to the surface and the LED system.