Features: The mechanical timer does not require any batteries, which is energy-saving and environmentally friendly. Step 1: Before each use, turn the timer clockwise to 55 alignment; Step 2: Turn the timer counterclockwise to set the required for time. It will be set when the for time is up. The alarm sounds for 3 seconds. (Do not directly start counterclockwise rotation from 0, so as not to damage the timer). The kitchen timer is made of stainless steel. The external structure and flower-shaped design made of stainless steel make the timer very beautiful, waterproof and corrosion resistant. The kitchen timer has a magnetic base, which can be easily attached to metal surfaces such as refrigerators or ovens. Suitable for cooking, baking, reading, homework, jogging, tasks, special needs, etc. Specifications: Material: Stainless Steel +Plastic Size: 8x5.5x3cm/ 3.15x2.17x1.18 in Color: Silver/Black Package Includes: 1X Mechanical Timer note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.