This stainless steel kitchen timer is easy to read and easy to use. The mechanical wind up timer with a loud bell will let you time up to 60 minutes. To fully activate the ringer you need to rotate the dial the full hour, and then turn it back to the amount of time you want to measure. When the bell goes off you'll hear it for about 7 seconds. The back of the timer is a large magnet making it convenient to attach to an appliance for out of the way storage. Wipe clean with a soft damp cloth when needed. 3-1/2" overall diameter.