15 minutes of time: The product has 15 minutes, common time to enjoy a sauna session. Also includes 5 and 10 minute approximate markers for your shorter needs. Clock rotatable: this wooden hourglass is very easy to mount on the wall with 2 screws (not included), align the wooden mounting strip vertically, screwed into pre-drilled holes, so that the mounting strip is perfectly hidden behind the hourglass. Widely used: This hourglass is designed to withstand the heat and steam of a sauna.it can also be used for other purposes, in classrooms, yoga or exercise rooms, or any other timed use . Specifications: Condition: Material: wood, glass Time: 15 minutes Application: Sauna Room Size: As Picture Shown Package Included: 1 * Sauna Room Sand Timer <p >Note: 1. Please allow 0~1 error error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. Note : the data are all manual measurement, please allow 1 - 3cm error, due to the difference in light and display, there will be a certain color difference, depending on the physical object received Delivery: (according to the main image)