Press and hold the ST/SP button to switch between timer and clock mode. Increase practicality when the kitchen timer is not in use Short press the 1H/5M/1M/5S buttons of timer, you can set the time you want faster, long press them to increase rapidly, save your time (Up to 99 hours 59 minutes 59 seconds) After setting a countdown time, press and hold the CUSTOM button for 2 seconds to remember the value, press it again, the countdown timer will automatically changes to the previous value. No need to set it everytime It is easier to see with a large timer. 3-level volume allows you to change between Loud, Middle, Mute. Just slide the button on the right side of the digital timer Magnets--stick the magnetic timer on metal surface such as the fridge; Stand--put the hour timer on the flat surface such as the desktop; Lanyard hole--hang the cooking timer with a rope in your kitchen