Who knew what the future would reveal? Apparently LeCoultre did! They were certainly ahead of their time when they made this watch circa 1951. Not only was the "Futurematic" futuristic in style, but in functionality as well. Notice that there is no crown to wind this watch. It winds automatically as you wear it. In the subsidiary dial opposite the 9 o'clock position there is a winding indicator so that the owner can see how much power is left in reserve on the mainspring. Once the winding indicator hand enters the red quarter of the dial it is time to oscillate the winding weight by your movement. This occurs naturally during your day and, if worn on a daily basis, you will never have to worry about winding. If you only wear it occasionally then you should don the watch until the indicator hand clears the red section and then re-set the time. Once the spring is fully wound there is a latching device engineered into the movement that halts the oscillation of the winding weight until the power wanes once more, then it is automatically released. On the back of the watch is a sliding button that has a serrated edge. You slide the button towards the center of the case and this engages the setting mechanism and acts as a "hack" feature that stops the watch. This way you can re-start it very accurately once you slide the button back to it's original position. I personally have one of these black dial beauties in my collection and I wouldn't ever give it up. This is a very classy and elegant timepiece that marks an important milestone in watchmaking. The subsidiary dial that is immediately opposite the indicator dial is a constant seconds indicator that runs constantly while the watch is keeping time. It also serves to balance, visually, the indicator dial. The seventeen jewel movement, caliber 497, is in excellent condition and engineered to a fault. The balance wheel is a two spoke Glucydur with a Nivarox spiral hairspring, and a Kif, shock absorbing, jewel spring. The yellow gold filled case is in fantastic condition measuring 34mm in diameter, by 45mm lug to lug, by 12mm thick. We have fitted it with a black, genuine lizard band to complete the look. This is a very unusual watch that will be the pride of your collection. The overall effect on the wrist is very handsome! Our warranty will ensure that you will wear this watch for years of trouble free service!