how to use the writing area

991ES Scientific Calculator with LCD Writing Pad 417 Functions Professional Portable Foldable Calculator for Students Upgraded

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• [911ES Multifunctional Financial Calculator] – NEWYES business financial calculator features 417 computing functions, which is more than the common scientific calculator on the market. And this can meet almost all of your daily computing needs.

• [Scientific Calculator with Notepad] – This scientific calculator intergrates calculation and notebook with a stylus pen. The lcd writing tablet enables you to take notes during the calculation, which do great help for study and work. 【NOTE】Only Unlock the LOCK KEY so that the writing area and the erase button will work.

• [Dual Power Solar Panel & Coin Battery] – The replaceble coin battery is built in this scientific calculator. It is also powered by solar energy so you don't need to worry about battery depletion.

• [Anti-Drop Body with High Durability] – The body of this scientific calculator undergoes rigorous quality tests. Due to the design of anti-drop body, no need to worry about the damage by accidentally falling.

• [Lightweight and Portable Design] – This lightweight scientific calculator only weighs 5 onzas. It can be easily put in your pocket, which is convenient for business and college.

Upgraded scientific calculator with notepad features 417 functions, which can better meet up your various needs than other calculators on the market

2 en 1 Design – Calculator with Notepad

This scientific calculator combines calculation with notebook, which is more convenient for us to do calculation in the process of study and work. And it also do great help to save paper.

Especificación

• Work Temperature: 20℉-104℉

• Net Weight: 5.3onz

• Writing Force: 5.2onz – 10.5 onz

• Writing Board Life: Over 50000 times usage

Easy to Erase the Notepad Screen

This scientific calculators with Notepad features a lock key, which can prevent your notes from accidentally erasing.

TIPS:

• Please turn the button to the unlocked position, so you can erase the notes on the screen.

• If you want to keep the notes, please turn the button to the locked position.

Durable & Anti-drop material

This calculator is made of high quality and durable ABS material which is heat resistant and shockproof.

Metal Texture Buttons

It adopts premium plastic material key, which makes it more sensitive and precise for you to do calculation.

Dual Power Supported

Bulit-in solar panel and coin battery. No need to worry about running out the battery.

Stylus Pen Slot

You can put the stylus pen in the slot of calculator. Easy to take out and no need to worry about losing the pen.