What came first - the hen or the egg? Anyway - eggs, it really works! [Instructions for use]: Turn the timer clockwise to the zero scale, and then turn it counterclockwise back to the required time, the timer will make a crisp bell at that time. [Function introduction]: Pork ribs need to be cooked for half an hour, crabs need to be steamed for ten minutes, and milk is crackling in five minutes. When you are busy in the kitchen, it would be great if you could remind you that the time is up at any time. These small timers can help you, and you no longer have to worry about the water being boiled dry and the dishes burnt. A half-hour nap is enough, 20 minutes of hair oiling, half an hour for the child to complete a set of math exercises, 20 minutes to memorize English words, at least half an hour of exercise in the morning... This timer is a genuine product, please pay attention to compare the clarity of scale printing and packaging. Tips: The longer the rotation time, the louder the timer will beep! Instructions Turn the timer clockwise once to the zero scale, and then turn it counterclockwise back to the required time, and the timer will make a crisp bell at that time. Size: about 57*76MM no battery required Egg timer in the right design!