[High-quality Control]Made of high quality ABS material. [Dual Power Design]Solar energy and battery backup power keep the desktop calculator always working. Auto-off when you don't use it for about 8 minutes to save energy. No need to worry about it running out of power.Requires one AA battery, package not included [Easy to Read]The 12 digit display clearly screen indicates your numbers in dark lettering while tilted screen for easy and accurate screen reading. 30°Visual angle makes all calculations easier to read than flat design. [Big & Sensitive Buttons]With responsive buttons, your calculation process will be faster and smoother. Percussion keyboard ergonomic design, not easy to bond. The standard function calculator with big buttons is easy to read, preventing you from hitting the wrong button. [Quick & Easy Tax Calculation]This Calculator Displays and Loss function button,which makes it easy and quick to calculate the cumbersome and enormous data. Perfect for office, home, school, business,store and mall. Colour:silver gray + black Material:ABS Package Contents: 1 x -5500 Calculator Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. [Quick & Easy Tax Calculation]This Calculator Displays and Loss function button,which makes it easy and quick to calculate the cumbersome and enormous data. Perfect for office, home, school, business,store and mall. [Dual Power Design]Solar energy and battery backup power keep the desktop calculator always working. Auto-off when you don't use it for about 8 minutes to save energy. No need to worry about it running out of power.Requires one AA battery, package not included [Big & Sensitive Buttons]With responsive buttons, your calculation process will be faster and smoother. Percussion keyboard ergonomic design, not easy to bond. The standard function calculator with big buttons is easy to read, preventing you from hitting the wrong button. [High-quality Control]Made of high quality ABS material. [Easy to Read]The 12 digit display clearly screen indicates your numbers in large dark lettering while tilted screen for easy and accurate screen reading. 30°Visual angle makes all calculations easier to read than flat design.