The EW-WU111 wireless unit is a compact wireless data transmitter. It easily plugs into the E-tube wiring system and seamlessly connects Di2 equipped bikes to a compatible wireless cycle computer.
Shimano D-Fly transmits data through a proprietary private ANT wireless protocol and allows riders to monitor Di2 gear position, battery life, as well as some other common rider data functions.
Compatible with the BT-DN110 internal battery.
Mfr Claimed Weight