Stainless-steel casing provides strength and corrosion resistance. Magnetic magnet back, easy stick on oven, refrigerator, and more metal. Practical and functional, ideal for cooking and baking at home magnetic system, makes it the perfect kitchentimer. Original 60 minutes visual timer, as time expires, the signature red-disk disappears in clockwise direction. No battery needs, much more safer to use. Durable and wide variety of uses, as a time management tool, it keeps track of time in the kitchen home ourdoor activity, office meeting and more with this mechanical timer. Very convenient for you to view the left time during homework, exercise,sports, games. Ideal for classroom, office, home, and special needs. Right way to use ( Which is very important to solve the problem of No Ringing! ) Every time before using the timer, the following steps must be repeated : Please turn timer clockwise circle to zero scale, and then counter-clockwise back to the requiredtime. And then the timer will then send crisp sounds.