Pocket Arcade Sudoku Classic Edition

Pocket Arcade Sudoku Classic Edition features a timer, help and mute buttons, automatic solutions, and auto shut-off after 3 minutes of inactivity. Game unit measures approximately 4.75 inches by 3 inches with a 2 inch by 2 inch screen. Requires 3 'AAA' batteries (included). This game also comes with a spiral bound Travel Mate Sudoku puzzle book with 360 puzzles featuring 3 challenging levels (simple/medium/advanced) and complete solutions.