HIGH QUALITY MATERIAL: The kitchen timer is made of 304 stainless steel The stainless steel case and disc design make the timepiece very beautiful, waterproof and corrosion resistant Magnetic Back Cover - For extra convenience, this timer can be placed on any metal surface such as refrigerator, freezer and microwave Owen etc Best for moms, kids, parents, teachers, office workers, professionals and students 70db Mechanical Loud Alarm, No Battery Required - The mechanical timer has a built-in 70db alarm and does not require any battery, so it is energy saving and environmentally friendly The siren is pretty loader; in low noise conditions it can be easily heard within a radius of about 10m, meaning you won't miss it even if you're in another room PRECISE TIMER AND BEST FOR TIME MANAGEMENT - Use this cute timer to focus on your tasks and activities Compared to other manual timers, this timer is designed to give you the most accurate, precise and error-free timekeeping Great for cooking, baking, reading, homework, jogging, homework, special needs and more