The Key Boy is an affordable retro handheld console built to emulate a variety of classic gaming systems. It boasts a 3.5-inch IPS display, powerful emulation performance, and runs on the customizable ArkOS operating system.

• Display: 3.5-inch 640×480 IPS screen
• Battery: 3500mAh removable battery with 5-8 hours of playtime
• Controls: Standard ABXY buttons, D-pad, two analog sticks, shoulder buttons (R1/L1 and R2/L2)
• OS: Runs on ArkOS, a Linux-based operating system
• Connectivity: Two USB-C ports, headphone jack, WiFi connectivity via USB-C dongle
• Storage: Two MicroSD slots for game and system storage

The Key Boy usually comes preloaded with thousands of games from a wide range of supported systems, featuring a mix of popular hits and hidden gems. Additionally, users can expand the library by adding their own game ROMs through a MicroSD card.

The Key Boy supports emulation for a variety of systems, including but not limited to:

• NES (Nintendo Entertainment System)
• SNES (Super Nintendo Entertainment System)
• N64 (Nintendo 64)
• Game Boy, Game Boy Color, Game Boy Advance
• Sega Genesis/Mega Drive
• Sega Game Gear
• PC Engine/TurboGrafx-16
• Neo Geo
• PlayStation 1 (PS1)
• PlayStation Portable (PSP)
• Capcom System 1, 2, and 3 (CPS1, CPS2, CPS3)
• MAME (Multiple Arcade Machine Emulator)
• Dreamcast (limited performance)
• Nintendo DS (with some limitations)

Yes, you can add your own game ROMs to the Key Boy using a MicroSD card.
Simply transfer the ROM files to the appropriate console folders on the
card, and the games will be accessible from the main menu​.