1. Shell material: plastic
2. Displayable digits: 8
3. Power supply: button battery AG10 x 1
4. Silicone buttons, comfortable to the contact
5. Replaceable batteries, longer service life
6. Power-saving automatic hibernation, can be woken up at any time, does not affect the daily learning and work
7. Mini and compact, easy to carry
8. Size: 86 x 55 x 8mm
9. Weight: 23g