Size: 6.3 * 4.5cm Instructions for use: Turn the timer clockwise once to zero scale, then counterclockwise to return to the desired time, and the timer will sound a crisp bell at that time. Function introduction: Spareribs need to be cooked for half an hour, crabs need to be steamed for ten minutes, and milk will crack in five minutes. When you are busy in the kitchen, it would be great if you could remind you at any time that the time is up. These small timers can help you, you no longer need to worry about the water boiling dry or the vegetables burning. Half an hour's nap is enough, 20 minutes of hair oil drying is enough, the child is scheduled to complete a set of math exercisesin half an hour, memorize English words in 20 minutes, and exercise for at least half an hour in the morning Product Description: 1. Mechanical timer, customized with special machinery, with the same principle as mechanical watches; 2. Adjustable from 1 minute to 60 minutes; 3. Exquisitely designed, it is a very cute home decoration; 4. Widely applicable: medicine, kitchen, household, school, mining, nursing, etc. usage method: Turn the timer clockwise once to zero scale, then counterclockwise to return to the desired time, and the timer will emit a crisp sound. matters needing attention: 1. When rotating to the bottom, do not use excessive force to avoid damaging the built-in movement; 2. During timer operation, please do not rotate back and forth multiple times to avoid damaging the built-in movement; 3. The timer casing is made of ABS plastic. Do not throw, throw, or smash the casing that is easily damaged or broken; 4. The timer casing and built-in movement are all made of plastic, please do not use fire to grill or burn them.