How to use the timer to rotate clockwise to 55 minutes and then counterclockwise to the desired time, such as 20 minutes. Then the timer will sound in 20 minutes.Mechanical operation: No power, manual winding, clear sound. High decibel buzzer warning, accurate cooking time. When the cooking timer magnet rotates to set the mechanical drive time, the bell will automatically sound.The stainless steel material mechanical kitchen timer is made of stainless steel material, durable, safe, rust proof, making it shockproof, precise, and aesthetically pleasing.You can set the time range from 0 to 60 minutes according to your needs. Designing a special and cute egg shape will make your room or kitchen more special and charming. You can also give it as a gift to your family and friends.Scope of application: Cooking, baking, reading, homework, overtime, exercise, games, activities, yoga, beauty care, etc. Color: As shown in the picture Packaging content: 1 * Timer Attention: Due to manual measurement, please allow for a slight error. Please make sure you don't mind before bidding. 2. Colors may vary depending on the monitor, please understand. Hello, please pay attention to your shipping address when purchasing products. If your delivery information (such as name, street, house number, doorbell/email without name, etc.) is incorrect, the order will not be delivered correctly