Shimano BT-DN110-2 Di2 Internal Battery

Among others compatible with:

- Alfine
- Nexus (Inter-8)
- Dura Ace RD-R9150
- Ultegra RD-6870
- Ultegra RD-R8050
- GRX RD-815
- Deore XT RD-M8050
- XTR M9050

Bluetooth technology allows riders and mechanics to communicate wirelessly with the EW-WU101 or SC-MT800 data transmitter unit via a computer, tablet or a smart phone.

Fine adjustments in the workshop or setting customized shifting preferences on the road/trail are now much more easier.

The prerequisite is the use of the BT-DN110 battery