8BitDo is currently creating a wireless controller that will be compatible with eh TurboGrafx-16 mini. The wireless controller is scheduled to be released on May 20th, and it will be available from Amazon for a price of $25.
Overall the device provides a more modern experience for retro gaming enthusiasts, by providing wireless capabilities.
The controller will be compatible with the PC Engine, and CoreGrax, and the Nintendo Switch. It will also be available in three different colorways including white, blue and black. The device is powered by a 180mah battery which will last for 18 hours on one charge. A home button was also included in the design which is integrated into the controller.
Image Credit: 8BitDo