Multifunction: Large LCD screen can display time, 12/24 hour format, temperature in °C / °F, humidity, alarm and countdown. Compact and portable: The clock is powered by two AAA batteries (not included), no need for wires or plugs. Timer function: Press the "TIME" button once to select 12/24 hours, the 1 minute and 10 minute touch screen buttons to directly enter the timer setting. For example, if you need an 11 minute audible alarm, just press the "10" button once, then the "1" button once. Easy to Read and Use: Time display with large numbers and can be easily read while taking a shower or putting on makeup. Slow cooking, slow roasting or barbecuing can even be programmed with this handy device. The total countdown is 99 minutes.