EPS 12x V4 Power UnitThe new EPS power unit gives power to all movements of the 12x EPS groupset.The unit is easily fitted in two different ways, there is a choice of seatpost mount or down tube/seat tube mount. The Power Units slender shape makes it compatible with virtually all seat posts on the market. Industry leading battery life is further extended with a 10% increase in charge capacity, rendering the need to recharge very infrequent.**Features and Benefits*** New Shape: The battery pack and circuit board of the V4 Power Unit are in a sealed unit measuring 259mm in length and just 16.6mm in diameter* Can be fitted inside the Seatpost: Its small diameter of 16.6mm means the V4 Power Unit can be seatpost mounted using one of the two adaptor sizes available.* Adaptor for the Seat Tube/Down Tube: Allows the V4 Power Unit to be fitted inside the down tube or the seat tube using the bottle cage fasteners**Technologies*** DTI: Digital Tech Intelligence: The heart and brain of the EPS drivetrain. * On Board Diagnostics: In the unlikely event of an issue the EPS system is capable of automatically detecting a whole range of malfunctions. * Waterproof - IP 67: The Campagnolo EPS electronic drivetrain complies with IP67 international standards. Weight: 135g