Instructions: Turn the timer clockwise once to the zero scale, then turn it counterclockwise to the hour required, the timer will emit a clear bell at this time. Function introduction: ribs should be cooked for half an hour, crabs should be steamed for ten minutes, and the milk crackles in five minutes. When you are busy in the kitchen, it would be nice if you could remind yourself that the time is available at any time. These little timers can help you and you don't have to worry about water boiling dry and dishes scorching anymore. A half-hour nap is enough, 20 minutes of hair oiling, half an hour for the child to complete a series of math exercises, 20 minutes to memorize English words, at least half an hour morning exercise... Product Description: 1. The mechanical timer is customized with special machines, and the principle is the same as that of mechanical watches; 2. Arbitrary adjustment from 1 minute to 60 minutes; 3. Exquisite shape, very cute home decorations; 4. Wide range of applications: medicine, kitchen, household, school, industry and mining, nursing, etc. Precautions: 1. When rotating to the end, please do not use too much force, so as not to damage the built-in movement; 2. When the timer is working, please do not turn back and forth repeatedly to avoid damage to the built-in movement. 3. The timer case is made of ABS plastic, please do not throw, drop or crush the timer case which is easily damaged; 4. The timer case and built-in movement are made of plastic, please do not use fire to roast or burn.