100% Brand new and high quality Good use on the desk or bedroom can see clearly in the dark when press the light button. Projection time function (pressing button) Measuring temperature range: -9.9~+60℃ Measuring humidity range: 20%~90% Resolution: 1℃ Display：Max/Min temperature and humidity Calendar Display: 2001 -2099 year Power Supply: 2x AAA battery (not included) / DC 4.5V input (cable not included) Dimensions: 15.00*2.50*10.50cm (L*W*H) Color: Black+ Grey How to use: 1. Setting the time The hour digits are blinking and can be set by pressing UP or Down for setting hours Use the same way to set minute. 2. Setting the alarm Press the mode to view the alarm time. Press mode hold for 3 seconds to enter the alarm setting mode The 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 calendar Press 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/off Press up to turn alarm on or off 5. Max/min Press the max/min to view max temperature and humidity record. Press the max/min again to view min temperature and humidity record.1 x Projection Multi-function Alarm Clock 1x User Manual