Tax Function Calculator: Ideal choice for VAT, also includes currency conversion, save buttons, percentages, grand total buttons and retractable buttons. Large Desktop Calculator: Modern fashion design, three cream color buttons, looks comfortable and fashionable, and is very light. The size of 17.5 cm (L) x 12.6 cm (W) is a very good choice for your desk, office, shop and home. Extra large display calculator: 12-digit large LCD display, easy to read and very remarkable for old seniors. Solar and battery dual power operation: solar power and battery take turns, ensure the calculator can be used reliably, long service life. Double power With solar and battery powered systems, it can be fully powered so you don't have to worry about running out of power. The working time is very long and it will shut down automatically when it is 8 minutes hasn't been used for a long time.It's very smart. Ergonomic design The ergonomically designed touch keys fit the curve design of fingers, making the calculation process faster and smoother; Once pressed, the buttons respond quickly and show the corresponding numbers on the large screen on; ABS plastic buttons allow you to use it. It feels comfortable in your hand and has high rebound button design, which is very sensitive. Stable on desktop There are 4 non-slip pads on the back of the calculator, which will not slip during use and ensure your keys are accurate. Kiss the table top completely, very safely.