USB charging cable for Shimano 12-speed Di2 road groupsets, charging the system through the rear derailleur port.

• Model: EW-EC300
• Length: 1500mm
• USB-A connection
• Compatible rear derailleurs: RD-R9250 (Dura-Ace), RD-R8150 (Ultegra)
• Also charges FC-R9200-P / FC-R8100-P power meter cranks
• Colour: Black