The program has been upgraded to the latest OS V4 version. Please do not use the official program to upgrade again. The official program will be locked and cannot be used. We downloaded 2750 games. Almost all GB and games are included. You can also delete and add your own games. Just download the game ROM to the memory card. Upgrade to osv4. More energy saving, no need to start the memory card program every time. The key can be customized in OS v4. With the saving module, 30% can be saved. GBP can also run perfectly with ordinary AAA battery.(There are many refitting schemes for high brightness GBP LCD. Some solutions are very intensive. AAA batteries with sufficient voltage stability must be usedWe don't guarantee that we can support GBP with high brightness LCD) It supports 99% GB games. clock is not supported. Support mirco-SD card up to 32G. Support FAT32 format -SD card. Colour:transparent + black Material: ABS Package Contents: 1 x Game Cartridge card Note: Different batches, the sticker on the product may be different, it does not affect Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.