Dimensions (Overall): .5 inches (H) x 1.75 inches (W) x 2.75 inches (D)
Weight: .15 pounds
Suggested Age: All Ages
Number of Players: 1 Player
Educational Focus: Problem Solving
Battery: 3 A13 Alkaline, Required, Not Included
• Display: LCD screen, 44 x 28.4mm
• Game functions 6 levels for game play, 6 helpful hints available, Automatic solving function
• Power supply: 3 x Ag13 button batteries ( Not included)
Just clip to your keys and you can take Sudoku with you anywhere! Features 6 levels of challenging gameplay, helpful hints, and automatic solving function.To play Sudoku, just fill in the grids to make every row, every column and every 3 x 3 box contain digits from 1 to 9.