This hourglass is a kind of small metal sand timer. The size is Dia4.5*7.8cm, not big, but very beautiful. The metal frame contains 2 round plates and three columns. And the frame can be in different colors. The time is available from 30 seconds to 3 minutes. In the following text, we will talk about the sand timer in detail, and show more images. We are the sand timer manufacturer, and you can check the factory information.