Feature:1. Folding Design: This handwriting tablet calculator has a folding design, it can be easily folded into your pocket or school bag, easy to carry.2. Handwriting Board Design: This handwriting board calculator is designed with a handwriting board, providing a convenient handwriting input method for quick and easy recording of calculation results.3. Solar Powered: This handwriting tablet calculator is powered by solar charging technology, without batteries, which is environment friendly and energy saving for long time use.4. Multifunctional: In addition to the basic four operations, this handwriting tablet calculator also supports statistical calculations, image drawing and many other calculation needs.5. Wide Application: This handwriting tablet calculator has a wide range of applications and can be used for accounting, school, exams and more.Specification:Item Type: Handwriting Tablet CalculatorMaterial: LCD, ABSRemarks: ( Shipped With Built In Battery )Calculator Battery:Battery Type: Button Cell LR1120Battery Capacity: 50mahLCD Writing Board Battery:Battery Type: Button Cell CR1220Battery Capacity: 40mah.Package List:1 x Handwriting Tablet Calculator1 x Pen1 x Manual