The 3500mAh battery has an impressive 4 year lifespan. With a 2-hour full charge time which can enjoyed up to 8 hours of continuous use, offering great convenience & portability for gaming on-the-go.

Here are the steps:

1. Power off the KeyBoy, take out the SD card labeled TF2-GAME on the left side of the device. Insert it into a card reader then into a computer.
2. Find compatible game ROMs online and download the desired game ROMs onto your computer.
3. Transfer the downloaded game ROMs into the correct console's folder on the SD card.
4. Insert the SD card back into the KeyBoy and turn it on.
5. Find and select the desired game from the list of consoles & games and enjoy!

By using the "OTG" type C port located on the bottom right of the device, you can enjoy multiplayer games, larger displays, and more flexibility by connecting various controllers.

Its HD image output can synchronize with larger screens (TVs) and provide HD resolution.

All the games on the KeyBoy are optimized to run at 60 FPS, ensuring smooth gameplay across all 20,000 games.

The RK3326 64-bit 1.5GHz processor, paired with the Mali-G31MP2 GPU, delivers exceptional performance, renowned for its capabilities in delivering seamless and immersive gaming experiences for prolonged hours.