991MS Multifunctional Scientific Calculator: ROATEE professional science calculator covers 349 functions,including General math, Statistics and regressioncal culations, Scientific Functions, Scientific Computation and it has memory function calculation more user-friendly. Suitable for High/Middle School Students Scientific Calculator with Notepad: This scientific calculator for school 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 will the writing area and the erase button work Multiview: display shows 2 calculations at the same time on screen, greatly improves computational efficiency Anti-Drop Body with High Durability and Portable: 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 and it has only weighs 5 ounces and It can be folded so it's more easier to put in your pocket, which is convenient for business and school 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 What Will You Get?: 991MS scientific calculator*1,instructions*1,exquisite packing box*1,packing case*1