Dimensions: 80 x 50 x 11.5mm

Function:

1) Three modes: easy / medium / hard

2) Every modes can automatically generate many puzzles

3) With memory function, which can record rate of the game and the highest

    grades

4) LED back light function, intelligentize control, with manual or automatic

    option

5) "Sleep" function: automatic enter into sleep state when the work time up 

     to 10 minutes, when you turn on the game next time it would continue

6) Automatic proof answer, press "Submit" to examine the answer when 

    finished game along with displaying right or wrong, and corresponding sound

    as well

7) Touch design 

8) Big screen LCD display, suitable for day and night (need to turn on the LED 

    backlight

9) Key sound hint, different key use different sound hint function and prevent 

    mistake from operation

Features: 

1) Three modes: easy / medium / hard

2) Every mode can automatically generate many puzzles

3) With memory function, can record rate of the game and the highest grades

4) LED back light function, intelligentize control, with manual or automatic 

    option

5) "Sleep" function: automatic enter into sleep state when the work time 

    up to 10 minutes, when you turn on the game next time it would continue

6) Automatic proof answer, press "submit" to examine the answer when 

    finished game along with displaying right or wrong, and corresponding 

    sound as well

7) Cursor design: in order to look over, the digit has fixed cursor, twinkling 

    cursor displays in currently position to move convenience

8) Big screen LCD display, suitable for day and night (need to turn on the LED 

    backlight)

9) Key sound hint, different key use different sound hint function and prevent 

    mistake from operation