Features: brand new and high quality 1. Added four most advanced and responsive rear buttons, which can be mapped to your -Xbox Series X or S controller. The ability to put your thumb on the joystick and your finger on the trigger greatly improves the response for time of any game. Gain the competitive advantage you deserve and eliminate your partners. 2. Support TURBO function and TURBO speed regulationA variety of built-in controller models: including anti-recoil, rapid fire, airdrop, Turbo 2.0, automatic breath holding, automatic point, rapid arrival, automatic operation. 3. Each ultra-sensitive button can be mapped directly and instantly, without magnetic keys or any software or application interface. Tournament mode allows button mapping without mods. 4. Four remappable buttonsThe most advanced button mapping system can directly map all 16 controller functions (including triggers) to any of the four ultra-sensitive buttons. The button height and position have been rigorously tested and optimized to ensure reduced hand pressure, and it comes with a convenient 3 meters USB cable for delay-free gaming. Note: for X-box Series X or S controllers, but X-box Elite or Elite 2 controllers are not supported. Specifications: Specifications: Item Type: Back Button Attachment Material: ABS Color: Black Quantity: 1PC Note: Note: Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Back Button Attachment 1 x User Manual