Gameboy pokemon gold order x 2

Product Name: Gameboy pokemon gold order x 2
Selling two copies of Pokémon Gold for Nintendo Gameboy Color (GBC). Games are authentic and work perfectly order but need new batteries. Picture shows games tested on Stadium 2. Including 2 new cr2032 batteries, larger than the originals but are said to last up to 15 years once installed. I don't know how to install batteries, recommend buyer has experience or knows someone with experience installing batteries. Left copy is in very good condition with original battery, never opened. Right copy was purchased a couple years ago with wear and tear as pictured but working battery at the time. I am a five star seller. I ship securely same day or next day.