Portable Raspberry Pi game console

This is my Portable Raspberry Pi game console. It's 3,6 cm thick, 9,6 cm wide and 13,6 cm long. Inside is a Raspberry Pi 2 running Retropie OS which allows it to emulate games from pretty much every single game-system from 1977 to 2003. It has both Raspbian and Kodi installed too.

SCREEN
The screen is a cheap composite backup camera screen from amazon. It has a resolution of 480x320 which might not sound as much, but it's no problem at all when playing retro games. Because the screen is made to work in your car it does need 12V to run out of the box. This however can be fixed easily, so that it runs of 5V :)

BATTERY
Battery wise it has a 6000mAh rechargeable Lithium ion battery which gives it around 4-5 hours of play time.
To charge the battery it has an Adafruit PowerBoost 1000C which can charge the battery in about 5-6 hours.

SOUND
The two built in speakers come from an old broken Nintendo DS Lite I had lying around (those could be replaced by the mini meta