Features: 

1) lcd display area: 53 x 77mm

3) Time and date function

4) alarm function

5) game function

6) Sound hint

7) Million puzzles for you to conquer

8) Power control: at game mode, auto power off after 8 minutes without

    operation / manual power on and off

9) Power supply: 2 x AAA alkaline batteries

10) Dimensions (L x W x H): 78 x 145 x 22mm

11) Weight: 103g (without battery)