Garmin Cadence Sensor 2  £34.99

• Monitor your performance as you ride with this easy-to-install, wireless cadence sensor
• The cadence sensor fastens to any size crank arm and tracks pedaling strokes per minute, so you can train for your optimal performanced
• Compatible with the Edge 1000, 810, 800, 510, 500, 910 XT, 310 XT, as well FR610 and FR70 series watch units
• Pack includes cadence sensor, cadence sensor straps, manual

Please see link below for compatible devices:

https://www.garmin.com/en-GB/p/pn/010-12844-00#devices