1. Projection time: Project the time onto the wall or ceiling so that the complete time can always be seen. The view is very clear, but it will not disturb you when you sleep. The recommended projection distance on the ceiling or wall is 3.3~9.8 feet (1~5 m) 2. Rotatable: 180-degree rotating projection, you can check the time without flipping 3. Date, alarm, time display: automatically display the correct time/date, the alarm setting can be restored after power failure 4. Snooze function: set separate alarms for different purposes. If you want to sleep for another five minutes, press the button 5. Color display: interesting colors of backlight<br><br>6. Temperature and humidity display: the highest and lowest temperature and humidity records will be displayed 7. Large display: It has a large display, which is especially suitable for children and the elderly to read Specification: Display mode: LED Projection distance: 1-5M LED backlight: support Humidity display: 20%RH to 99%RH Temperature display: 0 degreeto 50 degree/ 32 degree to 122 degree Power supply: 2xAAA batteries (not included) Colour:white Material:ABS Size:16 x 12 x 6cm<br><br>Package Contents: 1 * projection alarm clock 1 * usb cable Note: 1. With the battery, the projection time and screen will automatically disappear for a few seconds, press the switch again for a few seconds and then disappear 2. When plugged in, the screen and projection will always be on and cannot be turned off 3. The battery and power cannot be used at the same time, otherwise the alarm clock will be 4. Try not to use high-capacity batteries, high-capacity batteries will cause discomfort to the alarm clock due to high voltage 5. Compared with professional thermometers, there are errors. The weather fore