【7-in-1 Multi-functional Smart Device】Combines seven brain-teasing games including beginner and advanced code-breaking, 4x4 and 6x6 color Sudoku, classic Snake game, 3D Connect Four, and Color Collision. 【Ergonomic Design】Engineered for comfortable extended play with a unique tactile button experience and ergonomic shape that prevents hand fatigue. 【Dual Hint System】Features a two-tier hint system to prevent players from getting stuck, ensuring a smooth and enjoyable gaming experience. 【Long-lasting Hall Effect Joystick】Equipped with a durable Hall Effect joystick for precise control and extended lifespan. 【Massive Puzzle Library】Offers over 36,000 logic and reasoning challenges to keep players engaged and mentally stimulated. 【Portable Entertainment】Compact size and rechargeable battery make it perfect for on-the-go entertainment and cognitive development. Specifications: Material: ABS + Silicone + Electronic Components Dimensions: 145 x 93 x 33mm Battery: Built-in 600mAh lithium battery Age Recommendation: 4 years and above Games Included: 7 types Puzzle Database: Over 36,000 challenges