Campy's EPS drivetrain delivers the infallible consistency of electronic shifting without straying from the brand's defining style and aesthetics. As capable as the drivetrain is, it would be nothing without a brain to control it. As such, the Campagnolo EPS V3 Interface plays its role of loyal guardian to the system with finesse and skill. Overseeing the functionality of the system throughout your ride, the V3 comes equipped to zero out the derailleurs for resetting and make on-the-go diagnoses if the system begins to malfunction. It also works with Campy's MyCampy app to give you full control over shifting and ride quality. One of the biggest advantages to come out of electronic drivetrains as a whole has been the ability for riders to minutely tune the feel and responsiveness of shifts to their preferences. Unsurprisingly, Campy took its own approach in giving riders control of the drivetrain, developing MyCampy to allow you to adjust derailleur settings, change from single to double shifts, alter the speed of your shifts, and then communicate those changes to the V3 to set your drivetrain in seconds. If you depend on a dazzling head unit to deliver ride metrics while you train, the EPS V3 Interface will integrate seamlessly with it, communicating via ANT+ and Bluetooth with any computers that use the technology. You can also choose to run the MyCampy app on your smartphone while you're training, as it will keep track of your equipment and ride details in addition to making drivetrain adjustments. In terms of design, the V3 represents an upgrade from its predecessor, the V2, using a sleeker, more streamlined shape and conveniently including a built-in charging port, which the V2 did not.