Create Dazzling Light Shows – Build and design your own 3D sculptures with E-Blox's Crayola translucent bricks and watch them come to life with flashing lights that respond to sound and music! Sound-Activated LED Base – Includes a light-up plate with red, green, and blue LEDs that flash in sync with detected sound, creating a thrilling interactive experience. STEM-Inspired Free Building – Encourages creativity, problem-solving, and spatial skills as kids build structures on a sound sensor and LED light plate. Easy Assembly & Compatible Bricks – Build right onto the included battery pack using 25 large translucent bricks—fully compatible with LEGO DUPLO sized blocks for expanded play. Ready to Light Up Fun – Includes battery pack and sound sensor plate (3 AA batteries required, not included). Makes a perfect gift for birthdays, holidays, or any creative kid ages 5+.