Dual control shift switch designed for Shimano Di2 electronic shifting systemsProvides intuitive and precise shifting control for time trial and triathlon bikesFeatures two buttons for upshift and downshift functions, conveniently positioned for easy accessErgonomic design ensures comfortable and efficient operation during intense ridingCompatible with Shimano's E-Tube wiring system for seamless integration and customizationOffers reliable and responsive shifting performance in all conditionsCompact and lightweight construction to minimize added weight to the bikeDesigned to enhance aerodynamics and streamline the cockpit setup for optimal performanceCompatible with both 10-speed and 11-speed Shimano Di2 drivetrain systemsIdeal for riders seeking efficient and reliable shifting control for time trial and triathlon disciplines.