Lezyne Pro Sensor Pair (Speed and Cadence)An advanced pair of cycling sensors, the Lezyne Pro Sensor set are lightweight, compact and work with a wide variety of devices.Both sensors are formed from a translucent Composite Matrix which is a durable material that is also incredibly lightweight. The sensors are also easy to install with a magnet free installation system that works with most bike frame types.High-tech dual Bluetooth systems allow you to simultaneously pair the sensors to cycling computers and smart trainers.SpecificationsPro Speed SensorWeight: 11gDimensions: 37mm x 33mm x 13mmPro Cadence SensorWeight: 11gDimensions: 37mm x 33mm x 13mmFeaturesSuper compactLightweightMagnet-free installationSpeed sensor mounts to most hubsCadence sensor mounts to most crank armsBoth constructed from a translucent Composite MatrixHigh-tech dual Bluetooth system simultaneously pairs with cycling computers and smart trainersReplaceable CR2032 batteryBuy Lezyne Cycle GPS from Chain Reaction Cycles, the World's Largest Online Bike Store.