Featuresr core functions 3 in 1 heart rate monitor speedometer cadence sensorr main functions currentavgmax cadence currentavgmax speed speed comparator trip distance trip time total trip time odometerr easy operation two buttons allow for easy operation one for switching what info is displayed and another for more options regarding that infor waterproof device riding in a rainy day is ok but not soak in water or put in rainstorm for a long timer anti signal interference