The kitchen Timer is made of 304 stainless steel. The Stainless steel exterior and saucer-shaped design make the timer very aesthetically pleasing, water-proof and corrosion-resistant.For added convenience, this timer can be placed on any metal surface such as Fridge, Refrigerator and microwave Owen etc. Best for moms, children, parents, teachers, office staff, professionals, and students.Use this cute timer to stay focused on your tasks and activities.