Breakaway Cycles - How about a throwback. When's the last time you saw a still fully functional Shimano flight deck computer? I guess you could call it the precursor to Di2 with
Shimano Flight Deck Computers user reviews : 3.3 out of 5 - 88 reviews - roadbikereview.com
shimano flight deck SC 6502 | Bike Hub
Whats Shimano Flight Deck all about? There is a ribbon cable inside and what seems to be a button by the thumb of the shifter. What is it for? : r/bikewrench
Shimano Flight Deck Sensor Kit SM-SC79
Shimano Ultegra ST 6510 Shifting Brake Lever / 9S / Flightdeck – velowizard.com