"Working" means I have changed the battery only, the Vintage watches/clocks may run a little slow/fast. This is because the items I sell are Vintage watches/clocks and I cannot guarantee their timings or if there are any problems with the mechanisms other than needing a replacement battery. I am not a watch/clock expert and do not always have the correct tools to remove the backs to enable a battery change. The watch/clock may or may not be waterproof. These vintage watches/clocks have already been used for years and so I cannot guarantee the waterproof seal is adequate. Any cosmetic defects not mentioned, but visible in the photos, will be considered as described.