Features: small and conveniently portable, nice, comfortable key-pressing, super thin body, colorful

Main functions：

1)10-digit four arithmetic calculations; percentages calculations; circumferenc ratio calculations; square calculations;

2)conversions between improper fractions and mixed numbers; conversion between decimals and percentages;

3)hours, minutes, seconds input and conversion; time calculations;

4)fractions-reduction(simplication) calculations; evaluate reciprocals; division with remainder;

5)full dot matrix display; quickly flip and view up and down / forward or backward;

6)multi-step reproduction; the displaying format accords with the writing format;

7)modifying, inserting, deleting, fix-point numeration,

8)24-hour time settings, timer;

9)the settings for the date from 2001 to 2099;

10)questions bank, answers; the clear key;

11)super hard protection cover;

12)silica gel keys;

13)manual or auto power off