Tested and working on a Super Famicom prior to listing. Stored in a dark place after use. Please rest assured that this item was used and stored in a pet-free and smoke-free environment(^^) Initial operation confirmed. Will be cleaned with a retro game revival solution before shipping. Please check the condition in the images and comments. Please refrain from purchasing if you are overly concerned about the condition m(_ _)m No history of battery replacement or disassembly. Returns are not accepted if the item does not work due to differences in operating environments. Please understand this before purchasing. Please be sure to check the photos as this is a long-term storage item. Instant purchase is welcome(^^)