[Multi-Function] This product combines a calculator, a drawing board, a notepad, and a writing tablet. You can take notes while calculating, enhancing study and work efficiency. [Lightweight and Portable] This lightweight calculator and writing tablet features a stylus and a foldable design, weighing only 0.3 lb. It can be easily carried in your pocket or bag for convenient use anytime and anywhere. [Protect Your Eyes] The calculator has a 12-digit display, and the LCD writing tablet emits no blue light, helping to protect your eyes during use. [Save Electricity] One battery is pre-installed and typically lasts up to one year. The LCD writing tablet does not consume power when in use, and the device automatically turns off after a few seconds of inactivity. [Design] This is a solar-powered and battery-operated financial calculator (battery included), capable of being fully powered in any lit environment. Color: Grey Material: ABS Package Contents: 1 x Calculator with Writing Tablet 1 x English Instruction Manual Note: Only the items listed above are included; other products are not included. Note: Light reflection and differences in display screens may cause slight variations in color. Measurement error allowance is +/- 1-3 cm.