Touch Panel Electronic Sudoku with orange or blue backlights 1,3 difficulty level and millions of sub-games,2,various sound effect for games,3,A group of alarm for selecting,4,Time record and game memory function,5,With orange or blue backlights,Product size: 12*7.15*1.8cmPower: 2*AAA batteries(not included)Packing: 1pc/color box, 48pcs/ctn Touch Panel Electronic Sudoku