Intelligence game for fostering logic thinking Extensive selection of Sudoku puzzles: 1 million different games included LCD screen Time and date display, alarm function Drafting and reading functions Redoing examination function Double modes operation Input the digits 1-9 directly onto the Sudoku grid displayed on the screen Enter and delete digits directly on the screen until the puzzle is solved correctly Colors: black, blue and RED Packing details: Gift box per unit; 80pcs/ctn Carton size (W x H x L): 33 x 32 x 52mm G.W. 15 KGS