The removal of traditional mechanical cables in favour of electrical  wires not only eliminates poor shifting caused by contaminates, corrosion and stretching, but provides effortless gear shifts
This junction A is required to connect the shifters via E-tube wires to the down tube junction wire
5-port design, one for down tube wire to bottom bracket junction, four for shifter connection. Ideally suited for TT/triathlon with multiple shifter positions
Battery level indicator feature
E-tube EW-SD50 wires not included
Additional charging point when using internal battery
Gear index setup switch to allow fine tuning via shifter buttons
Reliable and secure water resistant connectors
Stem mounting strap included