【Day and Night Backlight】Provides backlight for easy viewing during dark hours. The backlight turns on when you simultaneously press the \"SET\" and \"MODE\" buttons to manually turn on the backlight. The brightness is very clear and does not irritate the eyes, which is an effective feature for passing through tunnels or dark paths. 【Multi-functions】The bicycle computer measures your cycling data such as average speed, max speed, and KM per hour, cycling time, and distance. New functions such as calorie statistics, temperature, etc., have been added. Small and portable, waterproof design, exactly what every serious cyclist or fitness fanatic needs to know about these cycling accessories. 【Automatic Wake-up Function】The bicycle computer enters standby sleep mode when there is no signal input for 3 minutes. When you touch the screen of the bicycle computer or start cycling, the bicycle computer automatically starts and remembers the values before sleep mode, and can also record data again according to your needs. 【IPX6】You may encounter bad weather such as rainstorms while cycling. The Hilceriy bicycle computer can fully travel in rainstorms (According to several test results, large-scale contact with rainwater in a rainstorm can lead to incorrect temperature function, meaning the water temperature is measured instead of the air temperature; the other functions work normally, the bicycle computer will not be damaged in this case). 【Applicable】Road bikes, mountain bikes, folding bikes, and other common bicycles are compatible with these cycling accessories. This bicycle computer MAY NOT be compatible with some electric-assisted bicycles. If the computer screen, sensor, and magnet can be installed within the specified distances, the device should be fully compatible. The Hilceriy team is ready to assist you.