Di2 internal battery, fits all e-Tube Di2 groups
Capacity: 500 mAH (± 2000km)
Use with EW-WU101 or SC-MT800 interfaces/junction to gain BlueTooth Smart wireless connectivity for on-the-fly adjustments with smartphones and tablets

Compatible with EW-SD50 Di2 Wire
Requires SM-BCR2 charger

PRODUCT CODE: IBTDN110A1