Features: The 7 in 1 Sudoku Machine combines LED gameplay with kid safe ABS materials, offering 7 mode for skill development. Featuring multiple mode, this portable brains trainer includes a LED display, battery NOT include. For ages 6+ and family play, this electronic educational toy sharpens cognitive abilities while providing entertainment. Perfect for travel sized entertainment during trip, classroom breaks, or family game nights, its portable sized design fit effortlessly into backpacks and tabletops. This learning tool change seamlessly between puzzles and multiplayer strategy game, with LED light feedback ensuring progressive skill mastery. Specifications: Material: ABS+electronic components Applicable age group: Children over 6 years old Mode: 7 mode Powered battery: 3xAAA alkaline batteries (excluding) Size: about. 14.49x10.26cm/5.7x4.03in Package Includes: 1pc Sudoku Board note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.