• Model: FX-991MS X
• Display: Dual-line display (one line for expressions and one for results)
• Power Supply: Solar-powered with battery backup (LR44 battery)
• Key Features:
  • 401 built-in functions, including scientific, trigonometric, logarithmic, and exponential calculations
  • Statistical calculations, including regression analysis, standard deviation, and mean
  • Complex number calculations
  • Matrix calculations (up to 3x3 matrices)
  • Equation solver (polynomial and linear)
  • Integration and differentiation functions
  • Support for fraction calculations and conversions
  • Base-n calculations (binary, octal, decimal, and hexadecimal)
  • Unit conversions for common scientific measurements
• Build: Durable body with hard plastic keys designed for high use
• Dimensions: 14.1 cm x 7.7 cm x 1.1 cm
• Weight: Approximately 95 grams (including battery)
• Certification: Compliant with standardized tests, approved for use in many exams (check with local testing authorities)

Key Benefits:

• Accuracy and Reliability: Extensive function list ensures precise results across various applications.
• User-Friendly Design: Large buttons and clear labeling make the calculator easy to operate.
• Eco-Friendly Power: Solar and battery power provide an efficient and long-lasting power source.