Features:
Calculator with Writing Pad - A combination of calculator and handwriting board, which provides noting place while calculating, improving study and work efficiency.
Convenient & Portable - Calculator weight only 108g(3.8oz), very compact that you can carry around in your bag. And use it immediately when needed, convenient for taking notes on phone calls, quick notes, and meeting minutes.
Healthy and Eco-friendly - The writing board supports repeated writing, reducing paper consumption and is made of blue light-free LCD screen for eye protection.
Two-way Power - Solar energy powers the calculator, no batteries needed. The notepad is powered by 1 * CR2023 button battery, no need to charge and connect, ultra-low power consumption, long service life.
Simplicity Design - With the stylus pen attached to its side, you can use it for arithmetic and writing or painting simultaneously. And one button to erase the draft, one button to lock and protect the writing as well.

Specification:
Color: Black, White, Grey (Optional)
Material: ABS
Screen Size: 4-inch, 3.5-inch (Optional)
Power By: CR2032 Button battery 3V, 240mAh
Product Size:
4-inch: 122x92x15mm, 108g/3.8oz
3.5-inch: 160x94x13.8mm, 108g/3.8oz
Package Size:
4-inch: 135x105x19mm/5.3x4.1x0.7in, 135g/4.8oz
3.5-inch: 170x105x17mm/6.7x4.1x0.7in, 148g/5.2oz

Packing List:
1 xCalculator with Writing Pad
1 xStylus
1 x User Manual