SHIMANO SM EW90 A Dura Ace DI2 Junction A 3 Port Size:STANDARD Warm and soft fleece perfectly 9120083728743 Warm and soft fleece perfectly retains heat Integrated decks are much preferred over standard scooter decks due to the ease of installation and removal of MODEL NO SM EW90 A SERIES DURA ACE 9070 Series Average weight 10 g E tube connector (QTY) 0 E tube port (QTY) 3 Charging port (QTY) 1 Compatible electric wire EW SD50 Compatible system E TUBE Connector for remote sprinter shifter (QTY) 0 Firmware update by E TUBE Project ✔ Function_Adjust mode display ✔ Function_DI2 Battery level ✔ Function_E TUBE connection ✔ Function_Gear position ✔ Port for remote sprinter shifter (QTY) 0 Position Under stem Type External type SHIMANO's SM EW90 A 3 port Junction A mounts neatly to the bike stem and connects with E TUBE wires from DI2 shifters and the downtube junction wire