Solar Clock Descriptions: 1, Push the slide switch on the back of the product upwards to turn on the power. 2, Slide the switch on the back of the product again to change another backlight color. 3, Insert the type C socket on the side of the product to charge the product and keep the backlight always on. 4, Time setting operation is as follows: A. Press UP or DOWN to switch between °C and °F. B. Press the SET key for 3 seconds to enter the time setting mode, then press the SET key to enter the setting sequence: hour→minute→year→month→date→confirmation C. In setting mode, press the up or down key to adjust the number up or down. 5, Press the SET key to switch to 12 or 24 hours mode 6, Press O to open the key light for 5 seconds 7, in the dark environment, when the car is moving, the backlight will automatically light up (solar model only), in the daytime or when the light is strong, the backlight will automatically go out 8, According to the current state, the temperature will show hot (HOT), comfortable (smiley), and cold (COOL) icons, and humidity will show dry (DRY), comfortable (smiley), and wet (WET) icons. 9, The product spares a CR2032 battery (when the product is not charged, it can be spare, you can choose not to use it) Specifications: Size: 80x30x35mm LCD display size: 6.6x2.13cm Material: ABS Color: Silver or Grey in dark Battery: CR2032 x 1 Package Included: 1xCar Clock Thermometer Special Note: Driving for a long time, such as transport vehicles, commercial vehicles, taxis, etc., needs with a Button Battery Assist when the solar power supply is not enough. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.