RG40XX H 4-inch IPS screen: The handheld game console features a 640 x 480 Ultra HD IPS screen that restores natural colors and provides a more refined and vivid gaming experience.lt;brgt;classic games: RG40XX H retro game console supports dual TF expansion 512GB, 64G+128G TF cards, and more than classic games are built-in. Various other game formats are supported. Users are supported to download games in relevant formats.lt;brgt;3200 mAh battery: The RG40XX H has a built-in 3200 mAh lithium battery that supports fast charging via USB Type-C cable. The RG40XX H retro gaming console can last up to 6 hours.lt;brgt;Upgraded chip: RG40XX H uses H700 quad-core ARM Cortex-A53 advanced chip, with a main frequency of up to 1.5 GHz, which can solve the problem of falling game screens, run games perfectly, make game screens smoother, and experience immersive gaming experience.lt;brgt;Packing list: lt;brgt;1 x RG40XX H handheld game console (black)lt;brgt;1 x 64GTF cardlt;brgt;1 x USB-C charging cablelt;brgt;1 user manualnbsp;What is the correct power-on procedure?A: There's a power on in the top right corner of the device. Press and hold it for three seconds to power it on (note: a TF1 system memory card must be inserted).Please explain the correct charging procedure and how to check if the device is fully charged.A: Use a Type-C cable to plug into the charging port on the bottom of the device. A 5V 1.5A charger or any standard charger under 30W will work. When fully charged, the indicator light will be off or green.Can I download other games? How do I do this?A: You can add games to supported emulators using a card reader or a computer. The ROMS folder on the memory card contains files for many emulators. For example, GBA games are stored in the GBA folder.What actions can cause the battery to drain faster?A: Maxing out the brightness and volume, as well as playing large, high-rendering games (such as those on PSP devices), can cause the device to drain faster.If the device won't power on, how can I troubleshoot and recover?A: Please check whether the charging function is working properly or whether the memory card is damaged. Please try reinserting the memory card and restarting the device. If this still doesn't work, try burning the system card again.What should I do if the ons don't work?A: There's a small R on below the power on on the right side. This is the reset on. Pressing it will restart the device.The handheld device is fully charged (green light on), but the power on still won't turn on. What's the cause? How can I fix this?A: Please check whether the charging function is working properly or whether the memory card is damaged. Please try reinserting the memory card and restarting the device. If this still doesn't work, try burning the system card again (system downloads are available on the website).Additional Information:Press and hold the Menu key + the volume on to adjust the screen brightness.Outside of the game, press the Menu key to access Settings gt; Language Settings.In-game, press the Menu key to save the game state.Uses the official simplified Linux operating system. Other operating systems are not currently supported.Charger not included. We recommend using a 5V/2A charger.For any other questions, please contact me via the email address on the merchant's home and I'll be happy to answer your questions!