ROATEE 991ES Rechargeable Scientific Calculator – CalcNote with 4-Line Multiview Display and LCD Writing Tablet, Foldable and Portable for Business, Middle School, High School, College, and Teachers (Black)

About this product

991ES Multifunctional Scientific Calculator

The ROATEE scientific calculator includes 417 functions, ideal for:

General math and science
Pre-Algebra, Algebra 1 and 2
Geometry
Statistics and regression calculations
Calculus
Fractions and decimals
Calculations in specific number systems (BASE-N, binary, octal, decimal, hexadecimal)
Complex numbers
EQN, MATRIX, TABLE, VECTOR, SOLVE functions
Biology, Chemistry, and more

Additionally, it features a memory function, making it more practical and user-friendly.

Scientific Calculator with Notepad

This calculator integrates calculation + LCD writing tablet with a stylus. The tablet allows you to take notes while performing operations, which is very helpful for studying and working. 👉 Note: To use the writing area and erase button, you need to unlock the LOCK key.

Multiview

The display can show 4 calculations simultaneously, significantly improving efficiency when solving problems.

Dual Power: Solar Panel and Rechargeable Battery

Includes a built-in rechargeable battery, reducing the need to replace batteries and being more eco-friendly. It also works with solar power, eliminating worries about battery depletion.

Drop-Resistant Body, Durable and Portable

The calculator body undergoes rigorous quality tests. Its anti-drop design prevents damage from accidental impacts. It weighs only 5 ounces, so it can be easily stored in a pocket, ideal for school and work.