Made of metal. Diameter: 5 cm. There are 3 separate compartments. Press the button to open - easy to open the lid. It can also be used for contain small items such as candy and jewelry. Packing list: 1*pill box We only sell pill boxes, not other items in the picture. Due to the difference between different monitors, the pictures may not reflect the color actual item. Due to manual measurement, please allow slight errors in size.