Featuresr wired bicycle speedometer includes all vital functions for novices and pros aliker easy to read big four line backlit lcd displayr durable and waterproof for use in all conditionsr easy installation no tools requiredr powered by cr2032 batteryr ideal assistant for bicycle trainingr r note after being soaked in water please wait a moment before pressing any buttonr r functionsr spd current speedr odo odometerr dst trip distancer mxs maximum speedr avs average speedr t