DIY LED Flashing Light Electronic Building Blocks

Overview:

1. The outer plastic is insulation material, inside is a built-in circuit board. When the building block is assembled on the bottom board, it will light up at once
2. Built-in LED light shines through plastic, it' s colorful and soft

Specifications
Material: Plastic
Size: 12.5×22×4.5CM
Weight: 1.25KG

Package Content:
1 x Building Blocks