CR1616: for Game Boy, GBA, Game Boy Colour, NES, SNES, Sega Genesis, Emerald, Puzzle Challenge, Ruby, Sapphire and Trading Card Edition Save Game Batteries
CR2025 for Pok Blue, Red, Gold, Silver and Crystal Save Batteries
The screwdriver bits (3.8mm and 4.5mm) are made of steel and laser engraved. 3.8 mm opens the game cartridges for original NES,SNES,N64, Virtual Boy, Original Game Boy, Game Boy Color and Sega Game Gear. The 4.5 mm bit opens the game cartridges for Sega Genesis, Sega Master System and Sega 32X, as well as systems for SNES, N64, Game Cube, Virtual Boy, Nomad, Game Gear, TurboGrafx 16 and TurboDuo.
CR1616 (battery diameter 16 mm, thickness 1.6 mm), CR2025 (20 mm, thickness 25 mm)
Works great with a cartridge GBA Ruby, Emerald, Yellow, Super Mario Land, Sapphire GBA, perfect for game boy games.