How To Use-Turn the egg timer clockwise all the way to 55 minutes, then turn it anti-clockwise to the time you want, like 20 minutes. Then the timer will ring after 20 minutes, you can see details in picture 2. Comfortable 80 Decibels-80 decibels offer a comfortable and clear sound for your ears, please use it in a quiet indoor environment and you will hear it clearly. Notes: Do not use it in a noisy environment, or you will feel the sound is very small.