Product Features: 100% Brand New and High Quality. Movement: Quartz Case Diameter: About 3.8cm/1.5in Case Thickness: About 1cm/0.39in Package Content: 1 x Pocket Watch 1 x Chain

How to open the cover? When you press the top, the cover will be open. Does the time adjustable? Yes, please pull out the crown top, and then rotate it to adjust time, after done, please press it down. Does the clock change battery available? Yes, please check the side of back cover, you can find there is having a gap, please use a tool to open it and then change a new battery if needed.