Lezyne hr flow sensor
Lezyne hr flow sensorthe high performance lezyne hr flow sensor conforms 100 to bluetooth smart standards for max compatibility the hr flow sensor is durable and of lightweight polycarbonate construction with translucent body and led indicators featuresflexible strap made from athletic materialsreplaceable cr2032 battery optimised for long lasting useweight 47gbuylezyne nutrition trainingfrom chain reaction cycles the worlds largest online bike store