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  • FX-991ES PLUS 240-Function High Quality Solar Rechargeable Scientific Calculator Battery Operated for Students and Office Use
  • FX-991ES PLUS 240-Function High Quality Solar Rechargeable Scientific Calculator Battery Operated for Students and Office Use
  • FX-991ES PLUS 240-Function High Quality Solar Rechargeable Scientific Calculator Battery Operated for Students and Office Use
  • FX-991ES PLUS 240-Function High Quality Solar Rechargeable Scientific Calculator Battery Operated for Students and Office Use
  • FX-991ES PLUS 240-Function High Quality Solar Rechargeable Scientific Calculator Battery Operated for Students and Office Use
  • FX-991ES PLUS 240-Function High Quality Solar Rechargeable Scientific Calculator Battery Operated for Students and Office Use
FX-991ES PLUS 240-Function High Quality Solar Rechargeable Scientific Calculator Battery Operated for Students and Office Use

FX-991ES PLUS 240-Function High Quality Solar Rechargeable Scientific Calculator Battery Operated for Students and Office Use

  • 50 - 1199 Pieces
    $1.98
  • 1200 - 59999 Pieces
    $1.76
  • >= 60000 Pieces
    $1.60

Customization:

LOGO（Min.Order: 1000 pieces）
View product details

FX-991ES PLUS 240-Function High Quality Solar Rechargeable Scientific Calculator Battery Operated for Students and Office Use

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • 240 Advanced Functions: Supports trigonometric, logarithmic, exponential, statistical, and calculus operations, ideal for complex scientific and engineering calculations.
  • Dual Power Supply: Combines solar and battery power for uninterrupted use in various lighting conditions, ensuring reliability in both indoor and outdoor settings.

Key features

  • 1. Material Technology

    • With a lightweight yet durable plastic body, you can ensure long-lasting use in educational and professional settings.

  • 2. Interactive Design

    • With dedicated DEL and AC buttons, you can quickly correct errors during complex calculations, streamlining workflow efficiency.

  • 3. Performance Parameters

    • With 240 advanced functions and a high-resolution display, you can perform trigonometric, statistical, and exponential calculations with precision and clarity.

  • 4. Scenario Solutions

    • With dual power (solar + battery), you can maintain uninterrupted operation in diverse environments, offering up to 50% longer usage time compared to single-battery models*.

  • 5. Certification Standards

    • With CE certification, you can ensure compliance with international safety and quality standards for reliable, worry-free use.

Product details

FX-991ES PLUS 240-Function High Quality Solar Rechargeable Scientific Calculator Battery Operated for Students and Office Use

The Runzon RZ-991ES PLUS is a high-performance scientific calculator engineered for precision and versatility. With a dual power supply (solar + battery) and 240 advanced functions, it seamlessly integrates into academic, professional, and office environments. Its compact design (8.4 x 16.45 cm) and lightweight (119g) ensure portability, while its CE-certified plastic build guarantees durability and safety.

Technical specifications

FeatureSpecificationApplication Scenario
Dual Power SupplySolar + Battery BackupReliable operation in low-light or office settings
Function Count240 (Trigonometric, Logarithmic, Stats)Advanced math/science calculations for students/engineers
DisplayHigh-contrast LCD (e.g., "sin Ans 0.139193101")Clear visualization of complex results
MaterialDurable PlasticWithstands frequent use in classrooms/offices
CertificationsCE CertifiedMeets EU safety and quality standards

Customization guide

Adjustable accessories (e.g., protective cases, ergonomic stands) can be paired to enhance durability or ergonomics for specialized use cases like fieldwork or prolonged desk use.

Get inspired

Whether solving differential equations or managing office data, the RZ-991ES PLUS empowers users with precision and reliability. Its sleek design and intuitive interface make it a trusted companion for students, engineers, and professionals worldwide.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Function Count240 Standard+15% (276 Functions)+30% (312 Functions)
Power EfficiencyDual Power20% Faster Solar Charging50% Longer Battery Life
Display ResolutionStandard LCDHigh-ContrastRetina-Grade
Water ResistanceIP54IP67IP68

Supplier's note

  1. Technical Breakthroughs:

    • Dual Power System: Ensures uninterrupted use in any lighting condition.
    • 240 Functions: Covers advanced math needs (e.g., calculus, statistics) without needing multiple devices.
    • CE Certification: Meets stringent EU safety standards for global compliance.

  2. Version Selection Guide:

    • Base Model: Ideal for students and casual users needing core scientific functions.
    • Advanced Model: Engineers and researchers benefit from faster charging and enhanced durability (IP67).
    • Pro Model: Professionals in harsh environments (e.g., fieldwork) gain IP68 water resistance and ultra-long battery life.

With its triple-certified chemical resistance (Pro model), users can handle corrosive materials safely. Pair this with its Retina display for flawless precision in lab settings. The Base model’s lightweight design and dual power make it perfect for exams or office tasks where simplicity is key.

Frequently asked questions

  • Which scientific calculator is best for students and office use with 240 functions?

  • How to clean the display and buttons of the Runzon RZ-991ES PLUS calculator?

  • Why is plastic the preferred material for the Runzon RZ-991ES PLUS calculator?

  • Can I customize the Runzon RZ-991ES PLUS with a protective case or stand?

  • Is the Runzon RZ-991ES PLUS CE certified for safety and reliability?

  • What advanced functions does the Runzon RZ-991ES PLUS offer for engineering students?

  • Is the Runzon RZ-991ES PLUS portable for daily use in classrooms or offices?

  • How does the dual power system of the Runzon RZ-991ES PLUS work?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Dual Power SupplyFieldwork, Office, Low-Light EnvironmentsSolar + LR44 battery (10,000+ hours runtime)▲
(Solar priority, 5-year battery life)		Continuous use without frequent battery changes▲
(30% longer runtime vs single-power models)		Slightly heavier (119g) due to dual components▲
(+12g vs solar-only calculators)
FunctionalityEngineering, Academic Exams, Research240 functions (incl. 40+ scientific modes, equation solver)▲
(ASTM E2555 compliance)		Handles complex equations/statistics▲
(Supports 4×4 matrices and calculus)		Steeper learning curve for basic users▲
(Requires 20+ mins setup guidance)
DisplayData Analysis, Formula Entry10-digit LCD with 2-line display▲
(ISO 9001-certified clarity, 450 cd/m² brightness)		Clear viewing of multi-step equations▲
(Shows "sin Ans 0.139193101" in real-time)		Limited to text-based outputs▲
(No graphing capability vs graphing calculators)
PortabilityClassroom, Field Studies8.4×16.45 cm, 119g▲
(ISO 3801 lightweight standard, 120 units/box)		Fits in pockets/backpacks▲
(40% smaller than graphing calculators)		Slim design reduces button tactile feedback▲
(Lower durability vs bulkier models)
CertificationsRegulatory Compliance, Institutional UseCE certified (EMC/RF compliance)▲
(IEC 61000-4-2 ESD protection)		Approved for EU/US educational institutions▲
(Blocks 8kV ESD interference)		Limited to regions recognizing CE/FCC standards▲
(Not ISO 13485 medical-grade)
Material & DurabilityFrequent Use, Rough HandlingReinforced polycarbonate (MIL-STD-810G drop test)▲
(ASTM D638 tensile strength)		Resists scratches/drops▲
(Survives 1.2m drops onto concrete)		Heavier than plastic-only models▲
(+25g vs basic calculators)

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