A4 Multi-Function Folder With Calculator Ruler Writing Board File Storage Plastic Splint

1. Material: hips
2. Weight: about 800 grams
3. Size: about 35x23x3.4 cm
4. Applicable paper size: A4
5. Features: wall-mounted holes on the back, convenient for hanging and storage, with pen holder and ruler functions, easy to use, with solar-powered calculator plywood, large and easy to clamp
6. Power supply: contains a button battery