New items, never used. The Game Bit 3.8mm will allow you to open: - Nintendo Game Boy & Game Boy Color cartridges all regions - Sega Game Gear cartridges all regions - Sega Nomad cartridges all regions - Nintendo NES cartridges all regions except JAP (Famicom) - super nintendo cartridges all regions - Nintendo 64 cartridges all regions - Nintendo Virtual Boy cartridges all regions The backup battery to change the internal battery of GAME BOY POKEMON RED/BLUE/YELLOW games. Battery can be mounted upside down compared to the photo, usable and works perfectly in both cases. Sending by letter followed.