PIONEER ANT+ SPEED & CADENCE SENSORHaving a GPS cycling computer is great. The speed is tracked via satellite but can be spotty at times when you're riding through a tunnel or riding in an area with dense trees. The Pioneer ANT+ Speed & Cadence Sensor provides instant feedback to any ANT+ cycling computers and fitness devices. It features a durable mounting strap that attaches the sensor to most bike frames. The cadence magnet attaches securely to most crank arms. The unit is powered by a single replaceable CR2032 battery.FeaturesInstant feedback provided to any ANT+ cycling computer or fitness deviceBattery powered with a single CR2032 batteryDurable mounting strap attaches the sensor to most bike frames | Pioneer Ant+ Speed & Cadence Sensor Speed and Cadence Sensor