Shimano 3-Wire Handlebar Control UnitThe Shimano E-Tube 3-wire handlebar control unit mounts cleanly to the stem of the bike and connects with the E-TUBE cables of the DI2 gears and the cable of the down tube connection, it has an integrated speed indicator. battery level, a charging port and a gear index adjustment switch. Shimano 3-Wire Handlebar Control UnitThe Shimano E-Tube 3-wire handlebar control unit mounts cleanly to the stem of the bike and connects with the E-TUBE cables of the DI2 gears and the cable of the down tube connection, it has an integrated speed indicator. battery level, a charging port and a gear index adjustment switch.Features:

• - Model: SM-EW90
• - Series: Dura-Ace 9070
• - Description: Junction A (front) 3 ports
• - Weight: 10 g

Reference: ISMEW90A