1. The alarm sound is enough to make you hear and get up. 2. The display is always on. 3. The time has no memory function, and the time needs to be reset after off 4. Compared with professional thermometers, there are errors. The weather forecast is for reference only, and the projection head rotates 180 degrees. 5. The display screen faces the person's face, and the projection arm rotates toward the back of the fuselage. The projected font is positive, which means when the direction of the person' of sight is with the direction of the projection arm, it is positive, and vice . It is designed according to the ergonomic way of thinking. Product Function: 1. LCD color screen display, LED backlight 2. Time display; projection time; adjustable calendar display; 3. Humidity and temperature display: Automatically detect and display the current environmental humidity and temperature (Humidity range: 20%RH ~99%RH; temperature range: 0degC~+50degC/32degF~122degF) According to temperature and humidity parameters. Forecast the current weather status. Displayed in form 4. Maximum/minimum temperature and humidity records 5. Alarm/snooze function 6. Voice control function 7. Projection angle can be change; 8. Small, simple design and digital display make it easy to read all information from angle. 9. Supply: USB cable (included). size:18x9x4cm Material:ABS colour:Black + Blue Package Contents: 1 x projection 1 x USB cable Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm. Have a great time shopping!