Easy-to-install - Simply attach the sensors and ride. With no magnets or other exposed parts to line up, these sensors are easy to install, maintain and move between bikes.
Cadence sensor - Fastens to any crank arm size and measures pedal strokes per minute so you can get the most out of your training.
Includes: Cadence sensor, Cadence sensor straps, manual

Technical Details

Size (LWH): 6.61 inches, 2.76 inches, 1.26 inches
Product Details
Product Dimensions: 6.61 x 2.76 x 1.26 inches
Shipping Weight: 0.13 pounds (View shipping rates and policies)
ASIN : B00JM6DKUA