15 minutes to enjoy a sauna session. It also includes 5 and 10 minute approach markers for shorter sessions. Made of solid wood and high quality glass, resistant, and durable. The hourglass will help you keep track of the duration of your sauna session. With excellent craftsmanship and smooth surface, delicate design for home decoration.Perfect for sauna room, domestic sauna room, office, restaurant, etc. Align the attached wood mounting strip vertically, screwing through the perforated pilot holes, to hide the mounting strip perfectly behind the sand timer. Specification: Condition: 100% brand new Material: wood + glass Color: as shown Timing time: 15 minutes Size:Length 30.1cm/11.8inch Package list:Sauna Hourglass *1