Features: Mechanical timer, the principle is the same as that of a mechanical watch No battery required, economical and practical 1 minute - 60 minutes can be adjusted arbitrarily Widely used in kitchen, home, school, industrial and mining, hospital care, etc. High quality stainless steel material, beautiful and durable Bionic shape design, stylish and chic. Exquisite and beautiful Precise timing, accurate control of cooking timeOperation method: 1. Rotate clockwise to 60 minutes, this is the "timer" full spring. 2. Then turn it counterclockwise (rotate) to the time scale you want to time. 3. When the clock reaches the 0 mark, the timer will ring automatically. After each use, the following steps must be repeated for the next use 1. Turn the scale clockwise to 55 2. Turn the scale counterclockwise to 10