Sudoku is a number puzzle game that is popular worldwide. Considered as "fiendishly addictive" Functions & Features of Sudoku: 1.Table:9 X 9(81grids) 2.Level:East, Medium,Hard&Evil 3.1200 build-in boards for each level 4.Can pause and continue the game 5.Counter function, Hint function 6.Key tone & Sound effect 7.Use battery:AAA X2pcs (not included) QTY:80PCS G.w:10KGS N.W:11KGS MEAS:57*29*33CM