[Calculator with Writing Tablet]This calculator is combine with LCD writing board. With the stylus pen behind of the writing board, you can calculate and record it very . This desktop calculator supports calculations with up to 10-digits, the data is clear and easy to read, suitable advanced and beginners. []With this 2-in1 Scientific Calculator, you can calculate and record at any time, you also can put it as a notepad when you are not using the calculator. The calculators has a button, you can click this erase button to clear the full screen, write repeatedly, reducing paper consumption and being . [Portable to Carry]This handwriting calculators is and clamshell design, easy to carry. You can take it in your bag, pocket, or even purse, the perfect for office business, classroom, and home use. [Easy to Replace Battery]Built in 2 button batteries, 1PCS LR1120 battery for Calculator, 1PCS CR1220 battery for LCD Writing Tablet, you can be replaced any time without screw installation, 't worry about the battery dying anymore. [Mute Design]Our calculator's keyboard're made of silicone material, soft Contact keys, quiet and noise-free. With this calculator, you will not interfere with other people while calculating the data, Perfect for working and learning. colour: black Material: ABS Package Contents: 1 set x engineering calculator Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.