Wide Compatibility – Supports 3–14-speed drivetrains on most gravel bikes.Wireless Electronic Shifting – Faster, simpler gear changes with a cleaner setup.RA7800 Caliper – CNC unibody design, 21mm dual ceramic pistons, and a unidirectional oil circuit.Damping Adjustment – Smooths shifts, reduces chain impact, and extends system life.Battery Capacity – Delivers up to 20,000 shifts per charge and withstands up to 800 recharge cycles.