This set includes three 7.5" plastic maracas with built-in LED lighting effects. Each maraca features a button to activate multiple light patterns, powered by included LR44 batteries. Designed for children ages 3 and up, these instruments produce rhythmic sounds suitable for music education, parties, or playtime. The maracas work well as party favors, piñata fillers, or carnival prizes. A replacement option is available if needed. The product ships ready to use with batteries pre-installed.