Description: This learning aid is an integrated tools of a calculator and a notepad. you can make notes while calculating to improve study and work efficiency. The calculator supports calculations with up to 12 digits and the notepad acts as a cover to stop dirt. Handwriting Color: single color Size: about 15cm*9cm"1. 35cm/5.91*3.54*0.53in Net Weight: about130G Product Color: white/gray black Equipped with Battery: CR2025 Material: ABS Product Name: Calculator Handwriting Board Applicable to: office, study, and other use scenarios. Packing List: Calculator*1 Writing Pad*1 Notes: 1. Due to the lighting effects and shooting angles, there is a color difference in the product, please understand. 2. Due to manual measurement, there is a tolerance in the product size.