One Of the Lightest Watches-Montblanc TimeWalker Pythagore Concept Watch Luxury Watches Montblanc by wholesalewatches - May 9, 20160 The Montblanc TimeWalker Pythagore Ultra-Light Concept watch is all about being ultra light, as is explicit in its name. Montblanc claims it is one of the lightest watches in the world, at just 14.88 grams. This is achieved through Montblanc's use of materials as well as skeletonization, so let's discover