Technical specifications:Material controller: aluminum, plasticRear derailleur material: steelCourses: 1x 12Waterproof: yes (IP69K)Compatibility rear derailleur: SRAM Eagle 10-52 teeth and 10-50 teeth cassettesData transfer smartphone | Bike computer: Bluetooth, ANT +Weight according to the manufacturer: n / aWeight weighed: 543g (rear derailleur including battery, battery protection and controller including clamp)Scope of delivery:1x SRAM GX Eagle AXS rear derailleur1x SRAM battery | Battery for Eagle AXS rear derailleur1x SRAM GX Eagle AXS controller with Discrete Clamp mounting bracket including screws1x charger and charging cable1x SRAM mini tool1x SRAM adjustment tool for cassette