Features:Measuring temperature range: 0°C-50°C/32°F-122°FMeasuring humidity range: 20% RH - 99%RHResolution: 1℃Display:Max/Min temperature and humidityCalendar Display: 2001 -2099 yearPower Supply: 2x AAA battery (not included)Dimensions: 15x2.5x10.5cm (L*W*H)Materials: ABSColor: BlackNote:1. In order to save power ,the projector and display will turn off a few seconds automatically , if you want to see the time please click the button "LIGHT"2. Battery is not included.How to use:1. Setting the timeThe hour digits are blinking and can be set by pressing UP or Down for setting hoursUse the same way to set minute.2. Setting the alarmPress the mode to view the alarm time.Press mode hold for 3 seconds to enter the alarm setting modeThe hour digits are blinking and can be set by pressing UP or Down for setting hours.Use the same way to set minute.3. Setting the calendarPress the mode to view the calendar.Press mode hold for 3 seconds to enter the calendar setting mode.The year digits are blinking and can be set by pressing UP or Down for setting years.Use the same way to set month and the day.4. Alarm on/offPress up to turn alarm on or off5. Max/minPress the max/min to view max temperature and humidity record.Press the max/min again to view min temperature and humidity record.Package included:1 x Projection Multi-function Alarm Clock1 x User Manual