Garmin Speed Sensor 2 and Cadence Sensor 2 Bundle brand_serfas Cassette / Cog: 8 speed

Cassette / Cog:  8 speed 11-34t

100% active

Locking Battery & Charger

Self-seating magnet snaps back into place

Garmin Speed Sensor 2 and Cadence Sensor 2 Bundle brand_serfas Cassette / Cog: 8 speedMonitor your speed and cadence as you ride with these easy to install wireless sensors. With no magnets or other exposed parts to line up, these sensors are easy to install, maintain and move between bikes. The Speed Sensor 2 attaches to the hub of either wheel and self calibrates with your Edge cycling computer or compatible Garmin device to give you accurate speed and distance The Cadence Sensor 2 fastens to any size crank arm and measures pedal