Modern computer bicycle computer waterproof, illuminated SunDing SD-558A A professional bicycle computer designed for both professionals and amateurs. A large, readable 2.9 "display and an intuitive control console make work with the device much easier. 28 functions! The counter is included with the battery, so it is immediately ready for use! SPD current speed ODO odometer (total mileage) ST distance MXS top speed AVS average speed TM total driving time TM driving time SCAN function CLK watch 12h or 24h SW stopwatch temperature TM UP driving time increasing TM DN driving time decreasing TRIP UP driving distance increasing TRIP DN travel distance decreasing comparison setting the speed units km / hm / h maintenance alarm handling alarm over speed alarm tire settings last distance reading settings last time settings for total time Freeze frame memory function low battery indicator auto on / off blue backlight turns on automatically when the meter detects a decrease in the intensity of external light The functions are controlled via an intuitive control console. The computer can be mounted in two different ways. Below are some examples of installations. All the necessary elements are included in the set. Mounting methods: On the left or right side of the steering wheel On the stem from the handlebar using the additional bracket included in the set On a special extension included in the set WATERPROOF The meter is waterproof, it can even be submerged in water. The cheaper models only have splash resistance. Thanks to this solution, you do not have to worry not only about rain, but also about complete immersion in water. The composition of the set: computer computer mount with magnetic sensor backing foam mounting bands magnetic sensor handlebar mount user manual in Polish Dimensions: Counter width: 10 cm Counter height: 4.5 cm Counter thickness: 2 cm Technical Specifications: - meter type: wired - power supply: CR2032 3V battery (included in the set) Certificates: CE - placed on the product is the manufacturer's declaration that the marked product meets the requirements of the so-called The "New Approach" of the European Union (EU). RoHS - Directive of the European Parliament and of the Council on the restriction of the use of certain hazardous substances in electrical and electronic equipment. The counter is packed in the original manufacturer's carton. Perfect for a gift Proven recommended!