Features Folding Design: This handwriting tablet calculator has a folding design, it can be easily folded into your pocket or school bag, easy to carry. Handwriting Board Design: This Basic Calculator Notepad is designed with a handwriting board, providing a convenient handwriting input method for quick and easy recording of calculation results. 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. Multifunctional: In addition to the basic four operations, this handwriting tablet calculator also supports statistical calculations, image drawing and many other calculation needs. 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 Calculator Material: LCD, ABS Remarks: ( Shipped With Built In Battery ) Calculator Battery: Battery Type: Button Cell LR1120 Battery Capacity: 50mah LCD Writing Board Battery: Battery Type: Button Cell CR1220 Battery Capacity: 40mah Package List:1 x Handwriting Tablet Calculator1 x Pen1 x Manual Package List 1 x Handwriting Tablet Calculator 1 x Pen 1 x Manual