Material Acrylonitrile Butadiene Styrene Human interface input Buttons About this item [3 in 1: Timer/Clock/Alarm Clock] Press and hold the ST/SP button to switch between timer and clock mode. In clock mode, short press ST/SP button to enter the alarm clock setting. [Shortcut Setting] Short press the [H]/[M]/[S] buttons to set the time you want, long press them to increase rapidly. If you want to reset it, press the [H]/[M] buttons at the same time. [3-level Volume] 3 levels of volume allows you to change between Loud, Middle, Mute. Just slide the button on the right side of the kitchen timer to do it, suitable for classroom, office, library, exam, etc. [3 Fixed Options] Magnets--stick the magnetic timer on metal surface such as the fridge; Stand--put the digital timer on the flat surface such as the desktop; Lanyard hole--hang the cooking timer with a rope in your kitchen. [Long working time] LIORQUE kitchen timer can work with 2 batteries(included) for up to 6 months. If the timer shows 88:88:88, the batteries should be changed. You should first lift up the stand and then open the battery cover.