This controller is specifically designed for use with RockShox Reverb AXS dropper seatposts for the next generation of a clean cockpit with a completely cable-free design. With the touch of a button, you can operate your Reverb AXS seatpost with less effort than ever before. It also offers a new level of interaction, personalisation, and connectivity across all AXS enabled components thanks to SRAM AXS technology. Open up all the possibilities with AXS. A Touch of Genius The wireless-electronic Reverb AXS is all Reverb, revamped with a controller you touch instead of a lever you throw. No second-guessing. No delay. A refreshingly light touch of the controller’s paddle offers instant engagement. A simple press of the paddle sends it down. Hit it again, it’s right back up. The perfect speed. Its infinite range lets you set it right where you need it, saving you time, energy, and keeping your focus on the trail ahead. AXS Technology at Hand SRAM AXS technology is opening a new door to a connected experience with your bike. Connecting components to software. Enabling the wireless RockShox AXS controller to talk instantly to the Reverb AXS seatpost. Connectivity across multiple AXS enabled components all supported through the new SRAM AXS mobile app. Customise AXS component configurations, review battery life, track usage, receive rolling firmware updates, and much more via the mobile app. AXS technology is the brain, expanding what's possible on a bike. Technologies: - AXS app lets you customise configurations, monitor battery levels, update firmware and much more for all RockShox and SRAM AXS enabled components. - Compatible with Matchmaker X. - System is completely water and dust proof to IP69K. Manufacturer's Part Number: EC8254000 Black 1-Button Left Hand