Opened, and may have been used a little. Operation confirmed. Battery replaced. It's old, but I think it's relatively clean, including the outer packaging. Please check the photos. ⚠️Please understand and agree before purchasing that there is a possibility of corrosion, leakage, or rust of the button battery during long-term storage. There is a small dog indoors. If you are concerned or have allergies, please refrain from purchasing. There are no smokers.