DELI Scientific Calculator D991ES

- This is a feature-rich scientific calculator designed for various mathematical and scientific calculations.
- The calculator offers a wide range of functions, including arithmetic, trigonometric, logarithmic, statistical, and more.
- It typically features a large and clear display that shows both the input and results, ensuring easy readability.
- The calculator is often powered by both solar cells and batteries, providing reliability in various lighting conditions.
- Whether for students, engineers, scientists, or professionals, the DELI Scientific Calculator 991ES is a versatile and indispensable tool for complex calculations.