| Region | Model Number | Screen Display | Video | Notable | |--------|--------------|----------------|-------|---------| | Japan | Mega-CD (HAA-3301) | Red Sega logo | 60Hz (NTSC) | Earliest version, different CD player UI | | USA | Sega CD (1601) | Blue “Sega CD” text | 60Hz (NTSC) | Most common for US collectors | | Europe | Mega-CD (HAA-3304) | Red Sega logo | 50Hz (PAL) | Slower boot, multi-language (EN/FR/DE/ES/IT) | | Brazil | Tec Toy variant | Red Sega logo | 60Hz (NTSC) | Same as JP but Portuguese text |