7PCS/SET DIY LED Night Light Tetris Puzzle Night Lamp For Children Kids 

1. Material:ABS Plastic+ LED

2. Battery Type: no need

3.Wattage: 0-5W

4.Product color: Coloful (7 colors)

5. Product Features:
    Novelty!Relive the classic Tetris game with glowing LED squares.
    A set of Tetris Lights needs only one blue square to connect to power, and other pieces can be lit when they are stacked.
    Tetris lights can be stacked in any combination and can be changed into different shapes every day. Parents and children can play together and enjoy the fun of the puzzle light.
    Colorful colors and soft light make it a good choice for toy gifts, atmosphere night lights and bedroom decoration.
Note:
    (1). Safe non-toxic material, is safe for baby/children use.
    (2).  Each square has its positive and negative, must be correctly placed in connection to light up.

6.Product size: As the below picture show.