✭ with 3D effect.
     When you press a key, it acts like a real keyboard and number or sign FLIES to the display.

✭ The NUMBERS are large and are easily distinguished.
✭ operations are displayed on the display.

✭ You can program a key
for VAT.

✭ You can calculate any PERCENTAGE easily.

✭ have another screen on the bottom with the history of operations that you are performing,
     swiping can see them.

✭ You can easily delete history.

✭ You can enable or disable the sound of the keys.

✭ With change the background color.