Vintage Skeleton Mechanical Luminous Black Steampunk Pocket WatchSpecification:Item Type: Wrist WatchDial Window Material Type: GlassWater Resistance Depth: 0mMovement: Quartz WatchClasp Type: Needle BuckleStyle: Fashion & CasualGender: UnisexDial Display: AnalogCase Shape: RoundDial Diameter: About 4.5cmChain Length: About 39cmHow to use/set mechanical pocket watch ?Setting time: Pull the crown away from base of the watch and turn the crown clockwiseuntil reaching the exact time.Winding the watch:Push the crown back into place along the base of the watch and winding up the watch clockwiserotation with 20 times. The power will be fulled. Do this one time each day(before sleeping).Otherwise, it will stop working. Please do not over winding up the watch if you feel the crownis tight.Package include:1 X Wrist WatchNotice:The picture is only for reference,please consider carefully before purchase.