UNIBlock Light-Up Bricks
Add a little spice to your brick-building sets with some light-up bricks! Using a small switch on the side, each individual brick can be turned on or off. Add a lightshow to a castle, or add some flashing lights to cars to make them even more stylish! All bricks are universally compatible with major brands, lights last for over 48 hours, and they have replaceable batteries.