📐 Elevate your calculations — because average just won’t cut it!
The DUPOTA OA-991EX PLUS scientific calculator combines 552 calculation functions with a high-resolution multi-line LCD, powered by solar and battery for long-lasting use. Its quad-core processor accelerates complex operations like matrix and vector calculations, while a durable sliding cover and lightweight design make it ideal for students and teachers tackling advanced math with confidence.
| Brand | DUPOTA |
| Manufacturer | DUPOTA CO.,LTD. |
| Model | OA-991EX PLUS |
| Model Name | OA-991EX PLUS |
| Product Dimensions | 16.51 x 8 x 0.25 cm; 125 g |
| Batteries | 1 LR44 batteries required. (included) |
| Item model number | OA-991EX PLUS |
| Standing screen display size | 2.5 Inches |
| Display Type | LCD |
| Power Source | Solar Powered |
| Batteries Included | Yes |
| Batteries Required | Yes |
| Battery cell composition | Alkaline |
| Material | Plastic |
| Includes Rechargeable Battery | No |
| Manufacturer | DUPOTA CO.,LTD. |
| Country of Origin | China |
| Item Weight | 125 g |
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