1. ALARM CLOCKS WITH PROJECTION ON CEILING: Set two separate alarms for different purposes. The time projection on ceiling or wall are easy to see throughout the room. The suggested distance of projection is 5 ~ 13 ft (1.5 ~4 m). Time projected in a soft color, the projection can be reversed 90 degrees. It is convenient to view and will not disturb your sleeping in bedroom. Ideal small alarm clock for kids. 2. TEMPORARY OR PERMANENT TIME PROJECTION: When the digital alarm clock is operated by AAA batteries (not included), by pressing the top button to turn on the backlit LCD screen and projection for a few seconds. When using the 5V power adapter, the backlit and projection will always light on. Simply press the button to adjust the 3 brightness mode for backlit , light - medium - out. The USB socket can be used as a charger for mobile device. 3. INDOOR ROOM THERMOMETER & HYGROMETER GAUGE: Equipped with professional grade sensors, the thermometer and humidity monitor for house provides most accurate measurements, displayed with indoor temperature and humidity, allows you to be aware if adjustments are necessary. alarm clocks for bedrooms, keeps you and your family's living conditions . 4. FUNCTION: With snooze function, this alarm clock allows you to get extra five minutes’ sleep time. 2 minutes loud ringing, best alarm clock for heavy sleepers. Press any key except the top button to stop the alarm, the alarm will automatically stay on for next day. 5. COMPACT DESIGN: DUAL alarms, indoor temperature and humidity, 12/24 hour, date, and week which are all displayed on the 3’’ backlit LCD screen. Deluxe packaging makes it a perfect gift choice or an ideal travel companion.