Features:Unique Design: The cylindrical sandglass makes it different from traditional sandglass.Clear glass: A sandglass may be made of high-quality clear glass, allowing an unobstructed view of the sand or other material inside.Accurately Timekeeping: A sandglass should measure time accurately so that it can be used for many purposes.DECORATIVE: The sandglass acts as an eye-catching decorative piece that will add a touch of style to any room or setting.VERSATILE USES: The sandglass can be used in many ways, including as a timer, conversation piece, or decoration.Durable: The sandglass should be made of high-quality materials to ensure that it can withstand regular use and last for a long time.Easy to use: The sandglass should be easy to start and stop and require minimal maintenance.CONVENIENT SIZE: A sandglass should be small and easy to store or display.Notice:1.Actual color may be slightly different from the image due to different light effect2.Please allow 1-3cm deviation due to manual measurementDescription:Material: GlassSpecification:5 minutes: 12cm*3.7cm15 minutes: 15cm*4.5cm30 minutes: 18cm*5.5cm