Shimano's SM-EWWU111A D-Fly wireless transmitter connects riders to their Di2 data to monitor Di2 gear position, battery life, as well as some other common rider data functions.
- Dimensions: 38mm x 25mm x 12.5mm
- Compatible with Shimano Road Di2 systems
- Compatible with Garmin Edge 1000 and PRO SCIO ANT+ cycling computer
- Weight: 5g
- Powered by Di2 shifting system battery