A beautiful antique bronze or silver tone pocket watch necklace measuring approximately 1 3/8 inches wide by 2 inches tall including bail (35mm x 50mm) hanging on a 30" chain. Choose which space image you would like set on the front under glass, measuring 1 inch (25mm) in diameter. There is also space inside for you to place a photo should you choose. The pocket watch runs on a regular watch battery that is changeable, pops open with the easy click of a button on the top and is easily set by turning the knob on top as well. A great gift for a space enthusiast!