High quality 1910s/20s era style pocket watch operates with a combination of hand wind and gyro wind for a truly automatic watch. The watch will add winding from the motion of wearing, plus you can hand wind as with any winding watch. Absolutely no batteries! Case is heavy and feels good in the hand. Beautiful engraving on the back side. Comes with a round watch chain for a truly elegant look. Arabic numbers are luminous in the dark, emulating the appearance of the popular "radium" watched of the early 20th century. (We promise, there is NO actual radium in these watches!! Perfectly safe!) This watch makes a fine addition to any outfit. Approximately 1.5 inches in diameter, and 1/2 inch thick. Chain is 13 inches long. Chrome plated brass.