Beginner Challenge: Brain Teaser Puzzle provides an challenge line clues, suitable for beginners. Each level provides a set of clues, and the difficulty gradually increases as the color range expands. Advanced Challenge: for those who are ready to advance, Block Pattern Matching includes dot clues suitable for more experienced users. Each level provides multiple sets of clues with increasing complexity and fewer verification attempts, ensuring that the challenge continues to . Material: Puzzle Games is made of ABS, which can withstand hours of while for children aged 3-6 years old. Included: The package includes a Brain Game, providing everything you need to solving puzzles right away. Size Chart:13.5cmx10cmx5cm/5.31inchx3.94inchx1.97inch Note:This is not infant toy, please take away from children to avoid eating. Color:Green & Black Material:Plastic Package Contents: 1 * Game consoles Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.