MICRO BOY ADVANCE™
MICRO BOY ADVANCE™
Eight consoles. One IPS screen. Smaller than a credit card.
2.75″ × 1.6″ × 0.5″

The first one proved a console could be this small and still work.
This one proves it can be this small and still be good.
IPS display. ALPS micro-switches. Thirty years of gaming history on a single card.
The screen is the upgrade
The original ran a basic panel. This one runs IPS — and if you've ever tilted a cheap handheld and watched the colors invert into a washed-out mess, you already know why that word matters.
IPS means the image holds from any angle. Blacks stay black. Colors stay saturated at the edges of the panel instead of ghosting out. You can hand it across a table for someone to see without turning it to face them.
At 240 × 160 with near-1:1 pixel mapping, sprites land where the artists drew them — no stretching, no interpolation, no smeared upscale. It's the difference between a screen that displays a game and a screen that does it justice.
Eight systems. One pocket.
This is the part that makes people put their phone down.
The Advance doesn't just handle one console's library. It runs eight, spanning the 8-bit era, the 16-bit generation, two handheld families, and the first wave of 32-bit disc games:
GB · GBC · GBA · NES · SFC/SNES · Game Gear · Master System · PC Engine
plus early PS1 titles
That's roughly three decades of gaming, in a device that hangs off a keyring. Load a single microSD card and carry the entire history of handheld and home console gaming in something smaller than the wallet it sits next to.

The details
⌁ ALPS micro-switches.
Not membrane pads. Not rubber domes. The d-pad and face buttons use genuine ALPS micro-motion switches — the same component class you'd find in a mechanical mouse. They register a real, definite actuation rather than a mushy press.
⌁ Built-in lithium cell, ~2.5 hours.
A square lithium battery sized to the chassis, charging over USB. Around two and a half hours of continuous play — a full commute each way, or an entire flight delay.
⌁ Open-source firmware.
The system runs a modified build of FunKey OS, an open, community-developed handheld platform. Not locked-down mystery firmware from a factory — an actual project with actual documentation behind it.
⌁ Smaller than a credit card.
2.75 inches tall, 1.6 wide, half an inch thick. Shorter and narrower than the card in your wallet. It genuinely disappears into a pocket.
⌁ Ten colorways.
Solid black, blue, purple and white — or the translucents: clear black, clear white, and two clear greens where the board and ribbon cable show straight through the shell.
Every Micro Boy Advance is modified and finished by hand. Not assembled by robot on a line — cut, fitted and polished by a person, one unit at a time.

Full specifications
|
Dimensions |
2.75″ × 1.6″ × 0.5″ (70 × 40 × 13 mm) |
|
Weight |
0.95 oz (28 g) including lanyard |
|
Display |
IPS |
|
Resolution |
240 × 160, near-1:1 pixel mapping |
|
Systems supported |
GB · GBC · GBA · NES · SFC/SNES · GG · SMS · PCE · early PS1 |
|
Buttons |
ALPS micro-motion switches |
|
Firmware |
Modified FunKey OS (open source) |
|
Battery |
Built-in square lithium cell |
|
Battery life |
~2.5 hours continuous play |
|
Charging |
USB C |
|
Storage |
microSD |
|
Touchscreen |
No — physical controls only |
|
Shell finish |
Hand-modified, polishing marks expected |
|
Colorways |
10 — solid and translucent |
|
Warranty / returns |
1 Year |
In the box: Micro Boy Advance · lanyard · charging cable · microSD card
Micro Boy or Micro Boy Advance?
|
Micro Boy |
Micro Boy Advance |
|
|
Size |
2″ — true keychain |
2.75″ — pocket |
|
Screen |
Standard, 160 × 144 |
IPS, 240 × 160 |
|
Systems |
3 |
8 |
|
Battery |
~3 hrs |
~2.5 hrs |
|
Best for |
The "it actually turns on?!" reaction |
Actually playing through a game |
Buy the Micro Boy if the magic is the size. Buy the Advance if you intend to finish something.
Questions
Is it really smaller than a credit card?
Shorter and narrower, yes — thicker, obviously, because there's a battery and a screen in it.
What does IPS actually change?
Viewing angles and color. Cheap panels wash out the moment they're not dead-on. This one doesn't.
Will PS1 games run well?
The hardware supports the format, and lighter titles play. Treat 8- and 16-bit as the core experience and PS1 as a bonus rather than the reason you're buying.
Are the scratches really that noticeable?
Noticeable enough that we put it in the product description rather than the fine print. Look at our photos of actual units — not renders — and decide.
Can I load my own files?
Yes. Standard microSD.

MICRO BOY ADVANCE
User Instructions
1. Powering On
Press the START button to turn on the Micro Boy Advance.
Allow a few seconds for the operating system and game list to load.
2. Opening the System Menu
Press SELECT + START together to open the system menu.
From this menu, you can access system functions such as mounting the device as a USB drive.
3. Shutting Down
For a normal shutdown:
- Press and hold SELECT + A together.
- Continue holding both buttons for approximately 4 seconds.
- Release the buttons when the FunKey operating system begins shutting down.
If the device is frozen and does not respond, continue holding SELECT + A. The device will force itself off after approximately 8 seconds.
Important: A forced shutdown should only be used when the device is frozen. Whenever possible, allow the operating system to shut down normally to help prevent damage to game or save files.
4. Adding Games Using a USB Cable
This is the easiest way to transfer games to the Micro Boy Advance.
- Connect the Micro Boy Advance to your computer using a compatible USB cable.
- Press START to turn on the device.
- Press SELECT + START to open the system menu.
- Select MOUNT USB from the menu.
- A new USB drive will appear on your computer.
- Open the USB drive and locate the folder for the corresponding game system.
- Copy your compatible game files into the correct folder.
- Wait until all files have finished copying.
- Safely eject the USB drive from your computer.
- Disconnect the USB cable.
Important: Do not disconnect the cable or turn off the Micro Boy Advance while files are being transferred.
5. Adding Games Using the microSD/TF Card
Games can also be added directly to the internal microSD/TF card.
- Shut down the Micro Boy Advance completely.
- Disconnect the USB cable and any other accessories.
- Carefully remove the screws securing the back cover.
- Remove the back cover without forcing it.
- Gently remove the microSD/TF card.
- Insert the card into a compatible card reader.
- Connect the card reader to your computer.
- Open the card and locate the folder for the corresponding game system.
- Copy compatible game files into the correct folder.
- Wait until all files have finished copying.
- Safely eject the card from your computer.
- Reinsert the microSD/TF card into the Micro Boy Advance.
- Replace the back cover and reinstall the screws. Do not overtighten them.
Important: Always shut down the device before removing the microSD/TF card. Removing the card while the system is operating may corrupt games, save files or system data.
6. Game File Names
For the best compatibility:
- Use file names containing standard English letters and numbers.
- Avoid Chinese characters in game file names.
- Avoid unusual symbols or excessively long file names.
- Place each game in the folder for its corresponding system.
Files with unsupported characters may not appear correctly or may fail to launch.
7. Safe File-Transfer Guidelines
- Only add game files that are compatible with the Micro Boy Advance.
- Do not rename, move or delete system folders.
- Always wait for a transfer to finish before disconnecting the device.
- Safely eject the USB drive or microSD/TF card from your computer.
- Keep a backup of important game and save files whenever possible.



