Sudoku is the latest greatest craze in electronic games. You solve the puzzle with reasoning and logic. Its fun, it’s challenging and it’s addictive! Each sudoku handheld features 3 levels of difficulty: easy, moderate and advanced. A handy and informative instruction sheet is included so even a beginner can enjoy this handheld without the frustrations of not knowing how to play. The handheld sudoku game uses 2aaa batteries (not included). The game itself measures 4-3/4 x 2-5/8 x 3/4. Gift boxed for easy resale or gift giving. Get in on the craze and learn for yourself why sudoku is so popular. Enjoy hours and hours of play with puzzles that can enhance your mind and exercise your thought.