Magnetic suction design: - The magnetic suction design helps you better fix it on metal surfaces such as refrigerators, range hoods, microwave ovens, etc., it is firm and does not fall off, and it is more convenient to use No battery required: - Mechanical manual winding, must be screwed down to 55 scale each time (for winding), do not exceed 0 scale, wind up fully, there will be a bell prompt for 3-5 seconds. Volume: - 72dB loud volume, ringing time 3-5 seconds, reminding you to pay attention, respond to the things that need to be timed in life. Applicable scene: - It can be used for cooking time, cooking time, fitness time, mask application time, nap time, and your life will be more regular. Quality service: - We are committed to providing quality products and services, if you have any questions, please feel free to contact us, we will get back to you within 24 hours.