... includes 6*6 sudoku game ,scounting, memory QQ, picking up Hong Kong kumquat, collision, figure magic square, lighting game, 1. It ... includes 6*6 sudoku game counting, memory QQ, picking up Hong Kong kumquat, collision,figure magic square, lighting game, 2. Calculating, ... design for carrying.6. Built-in 2032 lithium battery.7. Automatic shut-off. Unit size: 6.5X4.5X1.5CMCarton dimension: ...