Feature: 1. This product is a PS4 Controller Paddles handle extended button, you can customize the mapping of the button function on the back, support the TURBO burst function,plug and play, and bring users a different gaming experience. 2. Key composition. It is composed of 14 digital keys (,,,,R3,L3,R2,L2,R1,L1,TURBO, SET). 3. Function Setting. Long press the SET button for 2 seconds,X light flashes quickly. 2.Press the M1 or M2 (Press once to switch once ), lights flashing slowly in sequence (Flashing Sequence:R3L3R2L2R1L1) 4. When the -target button is flashing, press the SET button,finish setting. Note: the handle should also have programming and memory programming functions when it is not connected to Bluetooth state and charging state. 5. Clear Cache:Long press the SET button for 5 seconds,the LED changes from blinking to off. 6. Memory Function: Insert the handle again and still retain the last programming function. The factory default has no definition. 7. Turbo function:Press the M1/2 and Turbo at the same time, the function key has Turbo continuous launch function .Repeat this step to cancel. Specifications: Item Type: Back Button Attachment Material: ABS Color: Black Sleep current: Less than 30uA Working current: Less than 15uA Power supply mode:EXT wired connection Working voltage:DC3.0-3.3V Size:99.5x57mm Package Includes: 1 x Back Button Attachment 1 x User Manual