Can approach c10 work with r10

The Approach CT-10 sensors will not connect to a mobile phone through Bluetooth. The sensors require an ANT+ connection directly to a compatible device that uses GPS during golf rounds, and is designed for use during a round at an actual course. 

For a list of devices compatible for use with the Approach CT-10 sensors, access the link here: https://www.garmin.com/p/605172#devices