Product information: Color: Black Size: 13.5 * 4 * 8.5 Weight: 250 g Display type: Number Display type: LED Shell material : Plastic Power supply: AAA * 2PCS battery / DC 5.0V power supply Applicable places: living room, bedroom, study, office, kitchen, bathroom, public place Special functions: thermometer, perpetual calendar, alarm , calendar, 24-hour display, humidity measurement, week display Packing list: 1 * projection clock, 1 * USB power cord, 1 * user manual All-in -One Functions-----Wireless projection alarm clock with indoor temperature and humidity display; Temperature & time projection with ON/OFF button; 1 USB chargers; 2 alarm and snooze functions. Projection function ----- All information on the display is easy to read from any angle. Project time and temperature at the same time. Press button to project with battery for 8 seconds and keep project with AC adapter, you can also use ON/OFF button to control it. Adjustable time angle makes it easy to choose the right angle Automatic clock, indoor temperature and humidity ----- Atomic clock automatically displays the correct time (12/24 format) for you. Indoor temperature and humidity units are clearly displayed. The temperature is displayed in either C or F. These additional features will help you make a decision about your daily clothing. USB Connection, Dual Alarm with Snooze Function ----- Set two separate alarms for different purposes. Press the top button to snooze the alarm for an extra five minutes of sleep time. USB output interface on watch allows easy charging of electronic device.