Magnetic Hourglass Decorative Sand Timer with a Wooden Base for Desk Decoration Black Materials: glass, magnetic and iron filings Dimensions (hourglass): 6" high x 2.25" diameter; Dimensions (base): 3" x 3" x 0.75" Timer is approximately 25 seconds long The Magnetic Sand Hourglass is a fun desktop diversion. Flip it over and the grains of iron stack up in seemingly impossible formations thanks to a magnet embedded in the base. Watching time fly has never been so interesting! The craggy configurations of the iron filings eventually build into an ordered hemisphere with a spiky surface. Like your favorite movie, you can enjoy watching the Magnetic Sand Hourglass over and over again.
