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*1.8cm

Power: 2*AAA batteries(not included)

Packing: 1pc/color box, 48pcs/ctn

Touch Panel Electronic Sudoku