Sony DualShock 4 Back Button Attachment

DUALSHOCK4 the Back Button Attachment With Tracking 
Model: Sony Playstation DualShock 4
Type: Controller
More freedom in your playing style
You can also easily customize it during gameplay while checking the button assignments on the OLED screen
Attach two additional buttons on the back of your wireless controller (DUALSHOCK 4) and assign functions such as –³ —‹— –¡ buttons and direction keys to each button without compromising the function and comfort of the existing DUALSHOCK 4 more You can freely enjoy the game