CTIFREE 991ES Plus 2nd Edition Scientific Calculator | 417 Functions for High School & University Exams | Dual Power Display

Product No 991esplus2nd Brand CTIFREE Model 991ES Plus 2nd Edition (417 Functions) Display 10+2 Digit Natural Textbook Power Solar + LR44 Battery (Dual Power) Material ABS Plastic Functions 417 (List Included in Manual) Weight 220g Dimensions 17.42 × 8.12 × 0.90 cm Colors Black, Silver Included Calculator, Protective Hard Case, Manual, Battery Product Description Power Through Any Exam The CTIFREE 991ES Plus 2nd Edition Scientific Calculator is your essential tool for high school, college, and professional exams. With 417 built‑in functions, a large two‑line natural display, and dual power source (solar + battery), it handles everything from basic arithmetic to complex calculus and matrix calculations. Approved for most standardized tests (SAT, ACT, AP, GCSE, A‑Levels, etc.) — no graphing, no programmable storage, just pure calculating power. Why Students Love It 417 Comprehensive Functions: Includes equations, integrals, derivatives, statistics, matrix/vector calculations, complex numbers, and base conversions. Natural Textbook Display: Shows fractions, square roots, exponents, and integrals just as they appear in your textbook — no more guessing. Large 10+2 Digit Screen: Multi‑line display lets you review previous entries and edit formulas easily. Dual Power Source: Solar cell with battery backup ensures you never run out of juice during a long exam. Lightweight & Portable: Weighs just 220g and slips into any bag or pencil case. Product Details Model: 991ES Plus 2nd Edition (417 Functions) Display: 10+2 Digits, Natural V.P.A.M. (Visually Perfect Algebraic Method) Power: Solar + LR44 Battery (Included) Material: ABS Plastic (Durable, Drop‑Resistant) Dimensions: 17.42 × 8.12 × 0.90 cm Weight: 220g Colors: Black (Large Screen), Silver (Large Screen) Also Available: 991EX with 552 Functions (Large Screen) Perfect For GCSE, A‑Level, SAT, ACT, AP exams High school & university math, physics, engineering Professional certification tests (PE, FE, etc.) Daily homework and lab work Calculate with Confidence. Add to Cart Now.