Feature: 1. Special designed for controller, can map 16 different key combinations. 2. Improve operational flexibility and enhance your gaming experience with a 3.5mm interface. 3. Please use a 3 or 4 pole headphone plug to ensure that your headphone can communicate smoothly. 4. Extension interface + headphone interface, 3.2V/100mA input, wonderful accessory. 5. Made of high quality ABS materials, strong and , having long service life. Specification: Item Type: Back Button Attachment Material: ABS Color: Black Input: 3.2 V / 100mA Plug Type: Extension Interface + headphone Interface Applicable Device: For controller Please use a 3 - or 4-pole headphone plug to ensure that your headphone can communicate smoothly This "back button accessory" only provides a button mapping capability that can map 16 different key combinations and cannot be programmed or for set.It only works in terms of ease of use and helping to release the fingers Package List: 1 x Back Button Attachment 1 x Manual