This 3-in-1 Clipboard is suitable for A4 Paper and files. Made of high-quality plastic, and not easy to break. Design with calculator on the clip, convenient to calculate in case you need. And no need any battery, it's solar power, and environmental friendly. A pen slot on the side of the board, protect the pen from moving. And the edge of the multipurpose splint has - centimeter units, which can be used to measure the size of an object without having to carry an extra ruler. This multifunctional clipboard is perfect for students, teachers, parents, sales , business staff, professionals & individuals going to a meeting. Idea for home, office, travel, business trips or file papers and as a personal gift, souvenir and so on. Colour:Black Material:HIPS Package Contents: 1 x Multi-function 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.