Shimano Di2 SW-R610 Satellite Button

This Shimano Di2 SW-R610 Satellite Button provides an extra button/contact point for various applications. Mount it on drop bars to change gears in a sprint. If you have d-fly, you can also switch screen displays, turn lights on/off, turn on/off lights in the screen on the cycle computer, start/stop/pause on the cycle computer etc. This is a versatile spare accessory that can be used for a variety of functions, making it a great addition to any cyclist's setup.