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. Due to long-term storage, please be sure to check the photos. Instant purchase welcome(^^)