Re-flashable with any flasher like GBxCart RW that supports the MBM29F033C chip via the audio pin method. Uses FRAM to keep the save even when the battery runs out. Comes in clear plastic cartridge shell. Designed and made in Australia.
This cart works on every Gameboy system - GB, MGB, GBC, GBA, GBA SP and the Game Boy Player. It also works on the N64 transfer pack for Pokemon Stadium 1 & 2 (as per a user report).