Visual timer will not make any ticking noise when it is working.Easy to understandThe colored disk of this visual timer will disappear as time passes. It is super easy to understand for young kids and will help people develop a good sense of timeSilently workYunbaoit visual timer will not make any ticking noise when it is working. 3 alert volumes optional: mute, weak, loud; lasting alarm: 3 seconds/30 secondsEasy to useBy turning the center knob to expected time duration, the 60-minute timer starts counting downSuitable for many occasionsIt can be used as a study timer for kids, it can also be used as a kitchen timer, a task timer, meeting timer, or exercise timerMore about timerThe indicator light will flash to remind of low power of batteries. 2*AAA batteries required but not included. If there are any problems with our products, please contact us without hesitation, we will provide you with satisfying solutions