To activate LED Noodle Floats, press the red button near the base of noodle. Multicolor LEDs move in multiple fun patterns for 30 seconds, then automatically shuts off to help conserve battery life. NOTE: Remove from water after your fun to ensure battery house stays dry. Dimensions (LxW): 52″ x 2.5″ LED Colors: Red, Blue, Jade Comes ready to use with 3 replaceable AA Batteries. To replace batteries: Twist and pull the blue cap on the end of the noodle, remove the battery casing, change them out and put the battery casing back in the same direction. Pop the cap back on, twist it and you’re good to go.