Review on Red Secura 6-Inch Mechanical Countdown Timer with Magnetic Backing, Foldable Legs and Hanging Hole - 60-Minute Visual Timer for Teaching, Meetings, Cooking and Work, Ideal Timer for Kids by Laura Arnett

The timer is accurate, the display is large and practical. I suspect most people buy this timer for exactly these reasons. However, this timer is delicate. Make sure you only turn the dial in one direction. If you miss your time, turn the dial back a few minutes and the bell may not ring at the end. If you have a toddler like me, the dial will spin in all directions once they get it. So be aware that the call can stop working very quickly. One way to solve this problem is to set a timer for 59 minutes. Then let him count patiently. This fix worked a few times, but I'm not sure how long it will stay that way. I think it has to do with the spring inside spinning and then ringing at the end. Repeatedly turning the dial in the wrong direction spoils this spring.