Enjoy accurate performance and ease of use with the Deli D991ES scientific calculator 🔢.
It features a sleek design and a large display screen that shows equations just like in textbooks 📘.
It operates on dual power (solar + battery) to provide a long operating life ⚡, and supports 417 advanced functions to meet the needs of students, teachers and engineers.
It also features a sliding cover for protection and an automatic shut-off function to save energy 🔋.
Features and benefits:
- It contains 417 scientific and engineering jobs .
- A large “Textbook Display” screen for displaying equations in an organized and clear manner.
- Dual operation: solar power + battery (2 LR44 batteries).
- Automatic/manual shut-off feature to save energy.
- A sliding cover to protect the device.
- 3-year manufacturer's warranty .
- Suitable for school, university and office use.
Technical specifications:
- Brand: Deli.
- Model: D991ES.
- Number of jobs: 417.
- Power source: Solar power + 2 x LR44 batteries.
- Screen type: Widescreen LCD (Textbook Display).
- Stop function: Automatic and manual.
- Country of origin: China.
- Warranty: 3 years.
