Knob twist design, this timer is set to the time by the control rotation. Knob or turn the specified countdown timer or use it as a stopwatch. Special design makes time management easier Easy to manage time, this is a digital timer with a countdown function that can be used as a countdown timer, countdown from 99 minutes and 55 seconds to zero, or as a running stopwatch from zero to 99 minutes and55 seconds Magnetic timer, it comes with a magnet and a non-slip mat on the back. Tear off the film before using and attach it to the place where it can be absorbed by the magnet. Times up, it rings to warn Large digit for easy reading, LCD display to show stopwatch digits more clearly, minutes and seconds both be shown with large digits. Easy to read Memory function saves last timer setting for quick repeated use. Good for kitchen time, baking, sports, classroom teaching or other things you need to remind with remind