Game Controller Back Button Attachment for SONY PS4 Gamepad Joystick Rear Extension Keys Adapter with Turbo KeyThis 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.1. It is composed of 14 digital keys (Triangle,round,cross,square,R3,L3,R2,L2,R1,L1,TURBO, SET).2. Clear Cache: Long press the SET button for 5 seconds,the LED changes from blinking to off.3. Memory Function: Insert the handle again and still retain the last programming function. The factory default has no definition.4. 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.Specification:Material: ABSColor: BlackSleep Current: Less Than 30AWorking Current: Less Than 15APower Supply Mode: EXT Wired ConnectionWorking Voltage: DC 3.0-3.3VSize: 99.5 X 57mm/3.92 X 2.24"