1.MECHANICAL TIMER The egg shaped timer is a mechanical timer and does not require batteries. So it is both environmentally friendly and energysaving. But do not turn it directly counterclockwise, otherwise the egg alarm clock will be damaged. 2.Premium material: this mechanical egg timer is made of high quality environmentally friendly ABS plastic, providing you with a clean cooking environment. Even when cooking, you can effectively divide your time 3.Purpose: 1. Reset the timer to the 0 position of the scale during use (do not turn counterclockwise). 2. Then turn the capital letters clockwise to the scale of 55. 3. (Example: B. 15 minutes) Then turn counterclockwise to the scale of 15, and the bell will sound automatically 4.60 minutes: egg timer kitchen timer measures 80 x 65 mm/3.15 x 2.56 inches; the piece length is 60 minutes. Displays minutes with easytoread scale. You can adjust the time according to the current situation