Real Working Watch Movements Cufflinks Functioning Steampunk Cuff-links with Velvet Gift Box The model is real functioning watch mechanism. After you wind up clockwise, you will see the movement of all the gears. It is showing you the actual functions of the mechanism. The mechanism is delicate and durable, they are made by the power of science and imagination, they are more than a pair of cufflinks. Once you put the georgous cufflinks on the shirt, you will see the unique style. Dimensions 14 mm L x 11mm H Weighs 7 Grams/Pair Come with Beautiful Gift Box 30-Day Hassle Free Returns