Features: 1. The product is suitable for cars, bedrooms, and outdoor sports. 2. For cars: it has a bright light, which is good for night driving. 3. For the bedroom: when you get up in the middle of the night, turn on the backlight on the back to check the time and temperature. there is no need to wait for a long time, the brightness is moderate, the brightness your eyes can easily adapt, and it does not affect your sleep. 4. For outdoor sports: when camping, it is light and small, and it is portable. 5. Product high-temperature resistance, and anti-vibration, meet the requirements of the car environment, with clips, double-sided stickers, and a variety of backlight-free combinations. 6. Products meet the requirements of high temperature, anti-vibration, with batteries. 7. Angle adjustment of the bracket, Mojica sticker fixed super easy installation. 8. Three kinds of backlight free adjustment, low power consumption, super power saving Specification: LED display: 4.5*1.05cm Material: ABS Color: Yellow/Green/Blue Battery: AG3*2PCS Steps for time setting: 1. Clock function: there is a 12/24-hour switching function (default is a 12-hour system). 2. Clock setting: press a key for 3 seconds to set the time, press b to set the value, then press a to set the minute, press b to set the minute (set the minute to zero), then press a to confirm and exit the setting. (Press and hold the b button when setting the value, it can be accelerated. When setting, if no key is pressed for more than 60 seconds, it will automatically confirm and exit the setting). Package includes: 1*Car Clock Thermometer