Packing details: square kitchen timer (60*60*25mm), one 60 minutes, ringing time is 3 seconds. Use method: Open - - - rotation of a circle to zero clockwise; Timing - rotate counter-clockwise to the required time (1 - 60) minutes, and when the time is up, the clear bell rings for three seconds. Applications our products are perfect for home cooking, baking, BBQ, egg cooking, art and technology, sports, training, learning, classes, games, homework, brushing teeth, bath or work. Features: Built-in mechanical alarm device, no need to change the battery frequently. The time has come and you will be informed. In low noise conditions, the alarm is loud and clear. Both adults and children can operate by simply rotating their hands. Disadvantages: The ringing time is only 3 seconds, so it is not appropriate to place it for long periods of time when cooking food, or in remote locations, Short ringing time may result in loss of cooking time. Warranty: High quality products and services are our priority. If you have any questions about this product, please contact us.