GIIKER JKHRD001 Intelligent Magnetic Slide Block Puzzle Math Toy(Black)1. Material: ABS 2. Applicable age: 14 years old and above 3. Battery: AA battery x 2 (not included) 4. Intelligent induction checkerboard, when the big square is detected to reach the exit, the screen will automatically play firework special effects and victory sound effects 5. Magnetic hand feel, with a light push, it will be in place automatically, not easy to scatter 6. Small screen, fun to play with pixel style LED lamp beads 7. Magnetic chess