Shimano Di2 SW-R600 Remote Climbing Shifter

Shimano SW-R600 Di2 Remote Climbing ShiftersProduct Details: All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions Proper placement allows the rider to shift the rear derailleur up or down with the right thumb while in a climbing position Unit is designed to be mounted on the right-side top section of a drop bar, adjacent to the stem Use Di2 system checker to update component firmware from http://e-tubeproject.shimano.com/