Citiplus Scientific Series Electronic Calculator – SX-991MS

Product Specifications:

• Model: Citiplus FX-991MS
• Display: Dual-line (10+2 digits)
• Number of Functions: Over 400 functions
• Power Source: Dual power (solar and battery)
• Key Functions:
  • Fraction calculations
  • Trigonometric functions
  • Hyperbolic and inverse functions
  • Exponential and logarithmic functions
  • Permutations and combinations
  • Statistical functions (standard deviation, regression analysis)
  • Complex number calculations
  • Matrix and vector calculations
• Memory: Multi-replay function for easy correction and replay
• Dimensions: Approximately 12.2 x 8 x 1.6 cm
• Weight: Lightweight and portable (approximately 110 grams)
• Key Material: Durable plastic keys
• Additional Features:
  • Built-in error warnings
  • Plastic key design for longevity
  • Comes with a protective hard case
• Applications: Ideal for high school, college students, engineers, and professionals in technical fields