1. Compatible With One; One X; ; Series .2. Main functions: Map the function button on the handle to the back key so that the rest of the player's remaining idle can be synchronously matched, more convenient to make a wonderful operation. (Other buttons can be mapped to the back key in addition to the "Sync" key of the handle.3. Back key out Factory M1 M2 M3 default mapped to the upper and lower key values of the controller.4. With a 3.5mm earphone hole, it does not affect the voice function of the handle.5. With Mini to Mini Short Data cable, Mini turn Type-C short data cable, the back key can be used on the handle of the Mini port and Type-C port.6. With 3 meters long USB to Type-C data cable, it is convenient for players to use the position of the sofa is far from the distance.7. Trush screws, buttons can be replaced at any time, equipped with two sets of high and low keyboards, which can choose their more comfortable buttons.8. For one/ One S/ One X Series Handle requires a rubber pad, / series handle is in direct use.Mapping: Long Press (SET) Setting button three seconds, LED indicator flashes, enter the setup mode, press and hold the button you want to set on the handle, then press a button on the back key (M1 / M2 / M3 / This custom key setting is complete, continue to set the custom key, the custom key is set, press the SET button again, the LED is turned off, and the setting is successful.Clear Custom Mapping: Long press (CLEAR) Clear button 5 seconds, LED indicator points, all button custom map clears, restore the default mapping.Custom Key Efficiency Cancel: Long Press (SET) Set button for three seconds, the LED indicator flashes, press the back key to 1 custom key, or press the multiple custom keys, then press the set setting button, LED The indicator is off, and the custom key function pressed at this time has been canceled, then this definition button is not functional.Colour:Photo ColorMaterial:plasticPackage Contents:1 x Gamepad Back Button SetOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.