What is Customer Questions & Answers?

Customer Questions & Answers lets registered customers ask product-specific questions and share answers based on their experience. Questions and answers appear after moderation.

Ask about the product itself, especially details another customer may know from using it. For example: Does this camera take good pictures in low light? How long does this laptop battery last while watching movies? Does this computer have noisy cooling fans?

What shouldn't I ask?

Posts must be product questions or answers. Do not post about shipping or delivery, availability, a specific order, customer service, or material that violates our community rules. Use our FAQ or your account for order and support help. Links and contact information are not allowed in submissions.

How do I ask a question?

Sign in or register, go to the Customer Questions & Answers section on a product page, enter a title and your question, then select Ask a question. Your question appears publicly after moderator approval.

How do I answer a question?

Sign in, find a question you can answer in the product's Customer Questions & Answers section, then use Write an answer. Your answer appears publicly after moderator approval.

Why use Questions & Answers instead of an open discussion?

This section stays focused on product questions and useful answers. For orders, delivery, or customer service, use the help information in our FAQ.

Rechargeable Scientific Calculators 991ES MAX, 417 Functions

Name: Rechargeable Scientific Calculators 991ES MAX, 417 Functions
Brand: Unbranded
SKU: prod_9e7d6021337ebb452a34bdeb
Price: 148.00 USD
Availability: InStock

No rating yet(0 ratings)

Powerful Calculation Functions: With 417 calculation functions, it can easily handle complex mathematical formulas, function operations, and data processing in scientific research, meeting the diverse calculation needs from middle school to college students and researchers.

Convenient Writing Pad: The unique LCD writing pad design allows you to record ideas, formula derivations or important data during the calculation process. No need to prepare additional paper and pen. Calculation and recording are carried out simultaneously, greatly improving learning and work efficiency.

Dual Power Supply Modes: It adopts a dual power supply system of Type-C charging and solar power. There is no need to worry about running out of power. It can be quickly charged through a Type-C cable indoors. In outdoor or well-lit environments, the solar power supply can continuously provide energy for the calculator, which is environmentally friendly and practical.

Portable and Easy to Carry: The foldable design makes it compact and convenient to carry. Whether it is carried in a schoolbag to school or taken to the library or laboratory, it will not take up too much space. Start an efficient calculation journey anytime and anywhere.

Wide Range of Applicable People: This calculator is specially designed for middle school students, high school students, college students and researchers, covering all learning and research stages. It is an ideal tool to accompany you in exploring and seeking knowledge in fields such as mathematics, physics and chemistry.

You may also like CMD40012 Ruler Add-A-Quarter Plus, 6" & 12".