Set up wheel size in Garmin Connect™ or self-calibrate with an Edge® cycling computer or compatible Garmin device
ANT+® connectivity and BLUETOOTH® Low Energy technology let you sync to Garmin Connect™ and other training apps, compatible devices and fitness equipment
USES:
Receive accurate speed and distance data at all times, even without a head unit, when you ride indoors and outdoors
SPECIAL FEATURES:
No magnets or other exposed parts to line up makes the sensor easy to install, maintain and move between bikes
[This review was collected as part of a promotion.] I always ride tight trails and at a indoor bike park and having this was a game changer for getting accurate milage