ATOMIC CLOCK WITH 8 COLOR BACKLIT DISPLAY: In synch with the U.S. atomic clock. The time zone indicator is designed to be used in the United States (not for Hawaii or Alaska). During the RC reception mode, only the \"-\" button works. Press and hold the \"-\" button for more than 2 seconds to stop the RC reception mode. Choose your favorite color for the backlit by using Loop and Rainbow function.The USB socket can be used to charge a mobile device as well. TIME & TEMPERATURE PROJECTION: The projected time and indoor /outdoor temperature on ceiling or wall are easy to see throughout the room. The projected temperature changes from indoor temp to outdoor temp automatically. Time projected in a soft red color, it is very clear to view but will not disturb you or your kids\' sleeping.The suggested distance of projection is 4.9--6.5 foot (1.5 - 2 meters), ideal alarm clocks for bedrooms. TEMPORARY OR PERMANENT PROJECTION: When using two AAA batteries (not included), by pressing the top button, the backlit LCD screen and the time projection will light up for a few seconds. When using the 5V power adapter, the backlit and time projection will always be lit up. Simply press the \"-\" button to adjust the brightness of the backlit or turn it off. Press the \"-\" button and hold it down for about 3 seconds the projection image will flip 180°. DUAL ALARMS WITH SNOOZE FUNCTION: Set two separate alarms for different purposes on this projection clock. With snooze function, this alarm clock allows you to get extra five minutes\' sleep time. Press any button except the top button to stop the alarm, and the alarm will automatically stay on for next day. The alarm will automatically turn off if left alone for 2 minutes. WEATHER FORECAST: The clock can predict the weather for the next 12 hours as well as the barometric pressure trend and temperature trend. The projection alarm clock, a wireless sensor and AC adapter are all packaged in a deluxe box making it a perfect gift choice or an ideal travel companion.