This is a battery box for the original Game Boy (DMG-01). Although the spring in the third image is stretched, the one being shipped is the unused one in the first image, so please rest assured. Please note that the red circled part requires a soldering iron for installation. 【Examples of Use】 ・Power does not turn on ・Battery leakage ・Water damage ・Rust ・Batteries do not fit properly ・To maintain longevity