Sram: It’s simple. It’s about performance. The pure shifting performance of Eagle AXS™ is the real difference maker. Shift under load, over the roughest terrain, uphill, without changing your grip on the bar. Eagle AXS™ changes your level of control on the bike when you’re under pressure and pushing hard into the red. But more than that, it changes your relationship with the bike. No cable, housing or wires to manage opened up design and engineering possibilities with the Eagle AXS™ controller. Helping us pioneer a completely new shifting experience with new ergonomic touchpoints that take just enough effort to press. Touchpoints that are totally customizable to your preferences, allowing you to choose which button does what through the AXS™ AppTHINGS TO REMEMBERCompatible with MatchMaker™ XEagle™ technologyCustomize in-board and outboard shift optionsPairs with both XX1 and X01 Eagle AXS™ derailleursAXS™ enabled componentry software that makes it possible to both program and personalize new SRAM and RockShox componentsSystem is completely water and dust proof to IP69K SPECIFICATIONSDefault Function: AXS - Rear DerailleurOrientation: RightControl Points: DoubleClamp: DiscreteCompatible with ANT+ devices: YesLever adjust: NoMulti-position: YesBattery size: CR2032Color (SL): Black