Shimano XTR SC-M9051 Di2 Digital Display Unit, Junction Box with 3 E- Tube Ports and Charging Port

The Di2 System Information Display Unit serves as a display, charging port, and wireless communication connector for E-TUBE compatible DI2 systems.
Handlebar Mount
E-TUBE settings can be managed with smart phone/tablet
D-Fly compatible
ANT+ and Bluetooth LE Technology
Compatible with Shimano charger SM-BCR2