Note: Never start turning the timer counter-clockwise with a zero scale to damage the mechanism. Only use a cloth to clean the product. Do not wash with water. Mechanical operation: mechanical timer. No power, manual winding, clear sound. The doorbell will ring automatically when the cooking timer magnet rotates to set the time for a mechanical disc. Good design: high decibel sound warning, accurate cooking time. The clear scale helps you clearly set the time in minutes. Manual dial to set timers up to 60 minutes. To set the time, first turn clockwise for a maximum of 55-60 minutes to provide enough power mechanical, then turn counter-clockwise to set the desired time. Functional kitchen timer for measuring cooking, frying, cooking eggs, cookies, cakes at home