Electronic Sudoku Game

It's fun. Its challenging. It's addictive! It's a great interactive promotional item. Fill in the grid so that every row, every column, and every 3x3 box contains the digits 1 through 9. That's all there is to it. Game features three levels of difficulty with and without hints, selectable number of blank cells at start, pause function, entry check function, and game timer. Automatically keeps track of best time. Operates on 2 button cell batteries (AG13) included with auto shut-off after 10 min. 2 3/4" W x 4 7/8" H x 3/8" D