Eco-Friendly Material: The sauna timer is made of eco-friendly wood, loose hourglass and sturdy glass, durable, heat-resistant, moisture-proof and harmless. It can also be used for other purposes, such as restaurants, yoga, gyms, kitchens or other temporary uses. 【Easy Installation】Fix it to the wall with 2 screws. The sauna hourglass is fixed in the middle and both ends can be rotated freely. The time can be restarted at any time to give you more convenience. 【time confirmation】 The total length of the sauna hourglass is 15 minutes. It also contains 5-minute and 10-minute characters to meet your shorter calculation needs. Visible: The color of the sauna room is faint, but the light green color is still visible a few meters away.