This 3-in-1 Clipboard is suitable for A4 Paper and files. Made of high-quality plastic, durable 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, durable 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 dipstick - 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 teams, business staff, professionals & individuals going to a meeting.