This 3-in-1 clipboard is suitable for A4 paper and files. Made of high-quality plastic and not easy to break. Designed with a calculator on the clip, convenient for calculations if needed. No battery required, it's solar-powered and eco-friendly. A pen slot on the side of the board protects the pen from moving. The edge of the versatile splint features centimeter units, which can be used to measure the size of an object without needing to carry an extra ruler. This multifunctional clipboard is perfect for students, teachers, parents, salespeople, business personnel, professionals, and individuals attending meetings. Ideal for home, office, travel, business trips, or for storing papers, and as a personal gift, souvenir, and so on. Color: Black Material: HIPS Package Contents: 1 x Multifunctional Clipboard Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real thing. The allowed measurement error is +/- 1-3 cm.