Function: For multi-function back button: Designed for controllers. Two programmable buttons: Two programmable high-tactile back buttons, so you can show more movement and flexible movement in competitive gamesUp to 14 mappable keys: up to 14 programmable keys (X key, Y key, A key, B -key, RB key, RT key, LB key, key, R key, L key, key), free mapping to help you win imaterial, comfortable grip: the programming key puller is designed with metal alloy material , the keys feel good and the grip is comfortable3.5mm headphone jack: This product is equipped with a 3.5mm headphone jack, you can enjoy the sound effects after plugging in the headphones, eliminate other external noise and immerse yourself i (Note: the 3.5mm headphone jack on the back button cannot be used at the same time as for )Plug and play, easy installation: easy and convenient installation, plug and play, there will be no scratches or scratches on the controller during installation.< br/>Can be connected to PC: Install the Type-C interface model on the for /S controller, then connect to the computer PC terminal with wire to play PC gamesDesign to fit the back of the for : The design on the full-fit controller prevents the multi-function buttons for the back of the for from loosening or fallingProduct name: for multi-function back buttonInput voltage: 5vSet: B for seriesMaterial: plastic color: blackPackage contents:1 x Back clip button (for series)Only the above package contents, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture is a little different from the real thing. The permissible measurement error is +/- 1-3 cm.