C-Zone 2.4GHz USB Twins Wireless game Controller Gamepad Joystick for Android Smartphones Tablets PC Samsung Galaxy S6 Edge Plus S5 S4 Note/5 4 Sony Xperia/Z5 Z4 Z3-Black : Amazon.ca: Video Games
Conflicting joysticks? - RetroPie Forum
Shanwan Twin Usb Wireless Controllers : r/RetroPie