55 minutes mechanical countdown, no batteries required. It is different from the common timer, this Timer hides the clock dial, and chooses to use sound instead of visual perception. The white noise of time walking makes people calm, and it also reminds us to cherish the time, which is the charm of mechanical. Unlike traditional countdown timers, each of them has a unique design. We can't stop the passage of time, so enjoy it. Cute things work in any scene and for all people. This mechanical countdown timer can be used in too many situations. This timer can be used in too many situations. The countdown clock can be used for cooking, meetings, teaching, work, games, homework, and sports. Each available design can be assigned to a different learning timer for a designated activity, such as gym timer, homework timer, kitchen timer, study timer or work timer. The powerful magnetic backing panels making it ideal to place on refrigerators, ovens, utility cabinets, whiteboards, and more The method of setting up the 55 Minute Kids Visual Timer is simple and easy to learn by watching the video. The kitchen mechanical timer is made of ABS resin, which is very safe and does no harm to human body.