BATTERIES AND TOOLS SEPARATELY PACKED IN A SEALED PACK: Tabbed CR2025 Batteries 10-pack with 3.8mm, 4.5mm Security Bits and Triwing Screwdriver Set. GAMEBOY CARTRIDGE BATTERY REPLACEMENT: These batteries are the perfect replacement for most of your Gameboy and Gameboy Color (GBC) Games. POKEMON GAMEBOY GAME BATTERY REPLACEMENT: Pokemon Games including but not limited to Pokemon Yellow, Pokemon Crystal, Pokemon HeartGold, Pokemon Soul Silver, Pokemon Gold and More! SOLDER TAB BUTTON CELL BATTERY: Perfect for replacing batteries without the need to add any solder tabs, makes replacing save battery in your games fast and easy WORKING BATTERIES GUARANTEE: All Batteries are packaged separately, so no batteries will be dead on arrival. If any batteries arrive dead, please contact us for a free replacement!