The Electronic Sudoku Game offers an engaging and educational experience for players aged 4 and above. With its durable PP plastic construction and comprehensive electronic components, this handheld device provides hours of brain-teasing entertainment. The compact design measures 7.44x6.46x1.10 inches, making it perfect for travel, classroom use, or home play. Featuring multiple gameplay modes including teaching mode for beginners learning sudoku fundamentals, timed challenge mode for competitive play, and parent mode for progress tracking and customization. The colorful light effects and intuitive interface make learning enjoyable while developing essential cognitive skills. Size Chart: 18.9x16.4x2.8cm/7.44inchx6.46inchx1.10inch Package Includes: 1 Sudoku Puzzle Game 1 Instruction Manual 1 Charging Cable 36 chess pieces Note: 1.This is not infant toy, please take away from children to avoid eating. 2.Please allow slightly errors due to manual measurement and different monitors.