Assemble Lego blocks, 3D model decorations. It is offered in many different styles and sizes suitable for children and adults. This kind of toy is a puzzle building game that can greatly develop children's intellect and practical ability and provide good instruction to children. It can be reused, disassembled and reused. Soak it in lukewarm water, wash it, and then reassemble it. Of course, this is a good gift for our family and friends.Bringing brightness to your building blocks：The led light can make the building blocks toys shine in an instant, and it means that it gives them brightness in the dark.Connecting the power at that moment, different light color makes them more beautiful and unique rather than dull and boring.Our cables and dot lights are small enough to be hidden between the blocks without affecting the look of your model. All LEDs have a uniform light pattern and the cable connectors fit nicely together.THIS KIT CONTAINS:8 x White 15cm Dot Lights3 x Red 15cm Dot Lights1 x Warm White 15cm Dot Lights3 x 6-Port Expansion Board1 x 15cm Big Dot Lights3 x Button Battery Box(Batteries not included)Some Assorted pieces for assembly