Timing reminder: mechanical rotation, no battery required, so you can capture every minute, beautiful and durable.
Use: 1. When using, return the timer to the position of scale 0 (do not turn it counterclockwise). 2. Then turn the capital letter clockwise to the scale 55. 3. (e.g. B. 15 minutes) and then turn counterclockwise to the 15 marking, and then automatically ring.