1. 6 x 6 Sudoku game
2.Randomly generate the puzzles
3.if the system is idle for 3 minutes, it will auto power off. Before Power off, the existing game will be saved. 4. Time/date/clock
5. Battery: 2pcs CR2032 batteries operated
Product size: 8.4 x 4.9 x 1.5cm Screen size: 38 x 26mm Blister card size: 17.8 x 12.0 x 2.2cm