I love handhelds. The PC Engine GT is a desired one which took some time before I could add it to my collection. I bought it for some nice arcade version games and ofcourse of the OutRun version.
I didn’t have a TurboExpress, how the handheld was marketed outside Japan, back in the days as I had the Atari Lynx as my color handheld.
YouTube:
Accessories:
PC Engine GT EverDrive v1.8 China Edition
Information:
https://en.wikipedia.org/wiki/TurboExpress