The Donau office calculator is a practical and functional tool for daily use in the office or at home. With a 12-digit display, it allows for clear and precise representation of calculations. The calculator is equipped with a dual energy system that utilizes both solar power and batteries, ensuring reliable use in various lighting conditions. Its compact design and fixed display angle make it easy to use and seamlessly integrate into any work environment. Additionally, it offers a variety of functions, including square root, margin, and percentage calculations, as well as a rounding function, making it a versatile tool for complex calculations.

• Dual energy system (solar and batteries)
• Fixed display angle for optimal visibility
• Functions for square root, margin, and percentage calculations
• Two memory slots for storing numbers
• Double zero key for easy input.