This is Retro Hai's Nintendo GameBoy DMG Advance SP AGS-101 mod. Putting a Advance SP AGS-101 inside a DMG casing. Wiring up the controls, the LED light, a removable battery, Speaker, Volume, Headphones, Brightness and a Micro USB charging port.
https://www.facebook.com/haihaisb
You can check out my port of Jet Pac, JetPak DX here.
http://asobi.tech/
