Upgraded 991ES MAX Rechargeable Scientific Calculator with Writing Tablet,ROATEE 417 Function Solar Battery Professional Portable Notepad Back to School Supplies for Student, Teacher

[991ES MAX Multifunctional Scientific Calculator] - ROATEE business 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. [Rechargeable & Solar Panel] -The rechargeable calculator does not need to replace the button battery, and also comes with a type c charging data cable. It is also powered by solar energy, so you don't have to worry about running out of battery. [Scientific Calculator with Notepad] - This scientific calculator for Engineer 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. Great portable high school supplies! [NOTE]Only Unlock the LOCK KEY will the writing area and the erase button work. [Anti-Drop Body with High Durability] - The body of this engineering 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 with writing tablet only weighs 5 ounces.It can be easily put in your pocket, which is convenient for business and college.