Features: 1.Sudoku,Sudoku Game 2.Large LCD screen display 3.Mode: game "A" and game "B" 4.Time and date display Features:1.Sudoku,Sudoku Game 2.Large LCD screen display 3.Mode: game "A" and game "B" 4.Time and date display 5.Game function sound hint 6. Million puzzles for you to conquer 7. Power supply: 2 x "AAA" alkaline batteries Sudoku