[use instructions] : turn the timer clockwise to zero, then turn it back to the time required. The timer will ring with a crisp ring.
 【 function introduction 】 : ribs to boil half an hour, steamed crab ten minutes, five minutes to crash in the split milk, when you are busy getting in the kitchen, if can time to remind you that it would be great. These little timers will help you, and you won't have to worry about boiling water anymore. Half an hour for a nap, 20 minutes for your hair, and half an hour for a set of math exercises, 20 minutes for English words, and at least half an hour in the morning...