MULTIFUNCTION: The bike computer measures your cycling data, such as average speed, maximum speed and km/h, riding time and distance. New functions have been added, such as recording calorie statistics, temperature, etc. Small and portable, waterproof design. Day and Night Lighting: Provides a backlight for easy viewing in the dark. When you press the "SET" and "MODE" buttons simultaneously to manually turn on the backlight, the backlight will turn on with a super bright brightness that will not irritate your eyes, which is an effective feature when traveling through tunnels or dark paths. IPX6: While cycling, you may encounter extreme weather conditions, such as heavy rain. The Hilceriy bicycle speedometer can be used in heavy rainfall (according to several tests, large-area exposure to rain during heavy rainfall can lead to inaccurate temperature readings, meaning the water temperature will be measured instead of the air temperature. Other functions will function normally, and the bicycle speedometer will not be damaged in this case). Automatic wake-up function: If there is no signal input within 3 minutes, the bicycle computer will enter standby mode. When you touch the screen of the bicycle speedometer or start cycling, the bicycle odometer will automatically start working and remember the value from before sleep mode. The odometer can also re-record data according to your needs. Applicable: Road bikes, mountain bikes, folding bikes, and other common bicycles are all compatible with this bicycle accessory. This bicycle computer may not be compatible with some electric bicycles. If the computer monitor, sensors, and magnets can be mounted within the specified distance, the device should be fully compatible.