Specification: Product size: 60*60*35 (mm) Product weight: about 70g Describe: Rotary timing, easy to use Mechanical heart, no battery required Arrange time reasonably and refuse procrastination Timing range:60 minutes Ring time: 3 seconds How to use: Turn the timer clockwise once to the zero scale, and then turn it counterclockwise back to the required time, and the timer will make a crisp bell at that time. Do this every time you use it, please follow this method. Note: The size is measured by hand, there may be a little error, and the data is for reference only. Due to different lighting and each monitor, there will be different degrees of color difference, please refer to the actual product. We maintain a high level of responsibility for our customers and are as responsive as possible to the needs of our guests. If you have any questions about our products, please contact us in time, we will solve it for you immediately! Due to the different display devices, the color of the products may have some discrepancies, hope you can understand. Due to the different photo shooting angle, the actual shape and size of the product may not be consistent with the picture, please refer to the description of the product size, everything shall be subject to the physical object received. Thank you for your purchase, we sincerely wish you happy every day.