The customer comes first! If you have any dissatisfaction with the product, we support full refund within 30 days! Portable Calculator 12-Bit LCD Screen Science Smart Calculate Machine With Writing Board Tablet Digital Drawing With Stylus Pen Features: 【Calculator with Notepad】Equipped with 6.5 Inch writing tablet, you can take notes or graph while calculating by using the stylus pen in the bottom left side. The battery can be replaced. 【Lightweight & Portable】The pocket calculator, can be folded as small size, you can put it in your pocket, briefcases or schoolbag to office, school. 【More Sensitive Key】The button of basic calculator is made of premium ABS plastic material, which is more sensitive than silicone button. Repeated press will not interfere with its sensitivity. 【Intelligent computer tablet】Can repeatedly write 50,000 times, LCD handwriting screen. Comfortable handwriting, simulating real book handwriting. Magnetic absorption nano] stylus, not easy to lose, easy magnetic absorption. One-click lock screen on the side to prevent] accidental deletion. 【Locked and Unlocked Design】You can keep your notes through turning the button into the locked position. And if you want to erase] the notes, please turn it into the unlocked position and click the delete button to erase] them. Product Description: Product name: Handwriting computer Color: Black Material: ABS Viflosae Portable Calculator 12-Bit LCD Screen Science Smart Calculate Machine With Writing Board Tablet Digital Drawing With Stylus Pen Electronics Gadgets Deals of the Day Clearance 【Calculator with Notepad】Equipped with 6.5 Inch writing tablet, you can take notes or graph while calculating by using the stylus pen in the bottom left side. The battery can be replaced. 【Lightweight & Portable】The pocket calculator, can be folded as small size, you can put it in your pocket, briefcases or schoolbag to office, school. 【More Sensitive Key】The button of basic calculator is made of premium ABS plastic material, which is more sensitive than silicone button. Repeated press will not interfere with its sensitivity. 【Intelligent computer tablet】Can repeatedly write 50,000 times, LCD handwriting screen. Comfortable handwriting, simulating real book handwriting. Magnetic absorption nano] stylus, not easy to lose, easy magnetic absorption. One-click lock screen on the side to prevent] accidental deletion.