Knob twist design, this timer is set by the time by the control rotation. Button or turn the specified countdown 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 countdown, 99 minute countdown and 55 seconds zero, or as a stopwatch going from zero 99 minutes and 55 seconds. Magnetic timer, it comes with a magnet and a non-slip mat on the back. Tear off the film before using it and attach it to the place where it can be absorbed by the magnet. Times up, it beeps to warn. Large digit for easy reading, the liquid crystal display to show the stopwatch digits more clearly, the minutes and seconds both being shown with large figures. Easy to read. Memory function saves the last timer setting for quick repeat use. Good for cooking time, baking, sports, classroom teaching or other things you need to remind with remind.