CitiPlus - SX-991MS Key rollover feature for error-free input Scientific Series Electronic Calculator

Step up your math game with the CITIPLUS Sx-991MS Scientific Calculator – the perfect companion for students, engineers, and professionals who demand accuracy and speed. Built for tackling even the most complex problems, this powerful tool turns challenging equations into easy solutions.

 Top Advanced Features for Complex Calculations

Packed with 401 functions, the CITIPLUS Sx-991MS offers everything you need for algebra, calculus, trigonometry, and beyond.

• Matrix and Vector Operations – Ideal for higher-level math and engineering
• STAT-Data Functionality – Analyze statistical data with ease and clarity
• ANS Function – Retrieve and reuse previous results to save time
• Slide-On Hard Case – Protects your calculator from scratches and damage

Whether you're solving classroom problems or real-world scenarios, this calculator adapts to your needs.

Built for  Citi Plus - SX-991MS  Electronic Calculator Convenience and Reliability

Enjoy smooth, uninterrupted performance with the Dual Power System – powered by solar and battery, so you're always ready, wherever you are.

• Dual Power: Solar & Battery for extended use
• User-Friendly Design: Intuitive layout and durable keys
• Portability: Sleek, lightweight, and built to last

From exams to everyday calculations, the CITIPLUS Sx-991MS delivers performance you can rely on.