This is the Reverb AXS B1 seatpost with 2 button Pod Ultimate Controller to work with Flight Attendant builds.

• Effortless Electronic-Wireless actuation and infinite height adjustment with a single touch.
• Clean, simple and fast to install. No hoses to route, no fishing required.
• Updated internals for faster return speed in all conditions.
• New Vent Valve Technology, a simple and reliable built in service solution without disassembly of the seatpost.
• SRAM AXS technology, a new level of interaction, personalization, and connectivity across all AXS enabled components.
• Includes SRAM AXS POD Ultimate handlebar controller, rechargeable SRAM battery and charger.
• Compatible with 7mm round rails and 7x9mm oval rails.