Campagnolo EPS V4 External Interface

The heart and brain of the system: it handles the communication between derailleur and shifters, system diagnostic, zero setting and ride setting. Dual ANT+ and BlueTooth LE antennas allow communication with most GPS computers & smart phones Synchro Shift option to enable automatic front shifting when reaching specific ratios Easy access to charging port IP67 waterproof rating Weight: 33g (including cables)