2005 Gamepark gp2x
https://en.wikipedia.org/wiki/GP2X
320Ă—240 3.5 inch
2 Double-A Batteries
B on Joystick->SD Games->Scroll Down to Go-gpu
2005 PSP-1000
https://en.wikipedia.org/wiki/PlayStation_Portable
380X472 4.3 Inch
Internal Battery Custom Charger Plug
B on Wiz CD Card->B on GMenu2x
2009 Gamepark gp2x Wiz
https://en.wikipedia.org/wiki/GP2X_Wiz
320x240 2.8-inch amoled
Internal Battery Custom Charger Plug
A on Interesting Game/ Hit b until you get to micro SD Card.
2017 AtGames Sega Genesis Ultimate Portable Game Player
http://atgames.us/Ultimate-Portable-Game-Player-GP3228.htm
320 X 240 2.8 Inch
2019-09-19 RG300
320 X 240 3 Inch TFT
CPU: JZ4760B mips 528mhz-740mhz
RAM: 128M DDR2.
Lithium Chargable Battery.
2023-07-21 Anbernic RG35XX
3.5 Inch IPS Screen