1、Support moon display, indoor temperature with trend display, temperature degrees Celsius and Fahrenheit switching, and snooze / alarm function.2、The alarm clock uses digital display to be clearer, supports projection function, and displays the time to the wall or other plane, and the angle of projection can be adjusted.3、Dual power supply, when using the battery (not included), the projection and backlight do not turn on, you need to press the SNOOZE / LIGHT button to turn on projection and backlight for 10 seconds.4、When using DC 5V power supply, press the SNOOZE / LIGHT key to change the brightness of the backlight and the projection light. The backlight: bright - slightly bright - dark, the projection light: bright - off.5、Support American radio wave receiving function, RCC receiving mode is for WWVB; seven time zone time display, EST, AST, HAT, AKT, PST, MST, CST.