I’m not any kind of a watch expert, can’t make any guarantees on this item. Watch currently ticks when moved around, date and time can be changed. Not sure how well it keeps time, and I have no idea if this watch has ever been serviced. I purchased the Watch second hand so I’m not sure if this is the original band the watch came with, although I don’t believe this is the original band. Thanks for looking, and feel free to message me with any questions regarding the Watch.