Mechanical Core: The mechanical core is the advantage of this product. The product relies on mechanical gears to work, and the mainspring is wound mechanically. You don't need to buy additional batteries, and you can use it anytime and anywhere, which is economical and . The product shell is made of stainless steel, which is hard, rust-proof, corrosion-resistant, and durable. Magnetic Design: The product has a built-in magnet at the bottom, which can be attached to the metal surface and is not easy to move or fall. This design can help you better fix the product on the surface of electrical appliances such as refrigerators and microwave ovens, bringing more convenience to your home life. It can also be attached to the surface of a magnetic blackboard to facilitate classroom teaching activities. Visual Time Wheel: The product dial has a red color wheel, you can intuitively see the passage of time, which is convenient for users of different ages. Unlike digital timers, you don't need to calculate the remaining time by reading numbers, you can just look at the countdown to intuitively feel it, which is your right arm for time allocation and management. Multiple Uses: The timer has a wide range of uses and can be used in different occasions. It can be used as a student learning timer, a school teaching task timer, a home cooking timer, a fitness competition countdown timer, and a work meeting timer. The product is easy to use, and accurate time control helps cultivate good habits. Instructions for Use: You can set the time in two simple steps. You need to rotate the product clockwise to 55 degrees, and then counterclockwise to move the pointer to the required scale (the initial state cannot be rotated counterclockwise). Do not rotate the scale more than 55 degrees, otherwise it will damage the product.