It has a 2.4in 320x240 ILI9341 SPI display, stereo speakers powered by the C-Media 102S+, Game Boy pocket d-pad and buttons, a 2000mAh 103450 (10x34x50mm) battery, volume wheel, and a 5V power system integrated into the PCB (a customized version of GreatScott's from YouTube) with LEDs for charging, charged and power on. And let's not forget the made-from-scratch 3D bracket (the one in the picture was printed in draft mode, so it's a little sloppy).






You'll notice I had an issue with my left D-Pad button that I had to wire a jumper for. That's not supposed to be necessary. The next steps are to print out a good bracket, drill the shell, put everything inside, and then close it up.
Eventually I hope I can get someone from the community to come up with a good, classic-looking, Atari 2600 cartridge label (for the front and bottom).