This wood sauna timer is in adopting good and safe material, you can use it for a long time. With a very simple design, this hourglass is practical in the use process. Send it to your friends as a present, making them happy. Small size and light, you can carry it easily and conveniently. Features -Color:Multi -Material:Glass, wood, sand - Size: 25.50X11.00X1.00cm/10.02X4.32X0.39in - test range: 0-140 degree centigrade. - measurement accuracy: ±2 degree centigrade. - Note: About 15 minutes - This sauna hourglass timer is made of glass, wood and sand material, which can withstand the lasting use. - Using high-end and safe material, very sturdy and durable for use. Rigorous manufacturing process, ensures its durability and practicality. - Clear calibration, provides convenience to read. It can offer you 15-minute counting. - Hourglass was first used as an ancient timing tool, now it's not only a ornaments, but also can act as children's playing in leisure or . - Can be used for sauna sweat steam room, indoor baby room, school laboratory and other indoor place and time measurement. Package list: 1 x sauna hourglass