Portable Smart Sudoku Puzzle Game: This handheld 4-in-1 puzzle game is ideal for long drives, flights, or quiet time at home. Enhance Brain Function: This brain teaser game features challenging exercises that help improve early math skills, critical thinking, logic, and problem-solving abilities for children aged 4 to 12. It also offers a fun challenge for adults. Multiple Game Modes: Offers 6x6 and 9x9 Sudoku grids, automatic error detection, hint options, and player versus mode. Provides an engaging experience that encourages creativity, strategic thinking, and healthy competition. Engaging Puzzle Variations: Includes Color Sudoku and Magnetic Sudoku with 3500 unique challenges ranging from beginner to expert levels. Designed as an educational toy to keep kids entertained and mentally active. Color: As shown Material: ABS Package Contents: 1 x Smart Sudoku Puzzle Game 1 x USB Cable Note: Light reflection and different screen displays may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.