Scientific calculator with writing disk, geometric calculator, financial calculator for students and offices, functions 991MS 349.

The scientific calculator with tablet writing 991MS 349 functions of the financial engineering calculator for school students solar energy office.  

Description:  

• 【Stylish Calculator with Notepad】It comes with a 6.5-inch writing tablet and pen, allowing you to take notes while calculating. You can press the delete button to erase the notes, and you can also lock them to keep them.  
• Computing jobs include fractions, statistics, calculations of complex numbers, linear regressions, basic calculations, computer science, standard deviation, rectangular polar transformations, etc.  
• More Sensitive Key: It uses a luxurious plastic material, making it more sensitive and accurate than a silicone key. Comfortable to the touch.  
• 【Sole Energy】Solar panel + replaceable button battery for a seamless experience and long battery life.  
• 【Foldable and Portable】The new calculator notebook is foldable, dustproof, easy to store, and easy to carry. Ideal for elementary and high school students, university students, and professional researchers.