Specifications: ? Item type: antique pocket watch ? Case diameter(cm): approx 4.7 ? Chain length(cm): approx 37.5 ? Chain width(cm): approx 0.5 ? Case thickness(cm): approx 1.0 ? Case Material: Alloy ? Chain Material: Alloy ? Gender: Unisex ? Bettery type:377 ? Color: Black / White / Golden / Rose Gold ? Net weight: 53 g How to use: ? Once you received the pocket, please tear down protective film on the surface of the watch. ? Press the crown at the top of watch, the front plate will open. ? Setting time: pull the crown away from the base of the watch and turn the crown clockwise until reaching the exact time. ? Wind up the watch about 15~25 times. Please do not over winding up when the table is tight. How to Change Battery? If the pocket watches can not keep time after you use in a period of time, it may the battery run out. Please prepare a sharp tool, such as a small tweezers, gently insert one side of the tweezers into the gap between the back cover of the pocket watch and the dial, then gently wrap around for a round, then gently push the lid and change a 377 a battery. Package includes: ? 1 x Pocket watch ? 1 x 14.5 inches Chain ? 1 x Gift Box All items has been well tested, examined and packaged before sending off to your address. If there is any confussion before or after ordering, just contact us, we would provide the best service for you.