lighning bolt icon An icon in the shape of a lightning bolt. Zuckerberg also has at least two timepieces from Swiss watchmaker Greubel Forsey, one of which is a prototype containing the watchmaker's new complication. Speaking with Drip, Zuckerberg flashed his Nano Foudroyante, a watch with a reported retail price of 465,000 francs — roughly $585,000 in today's dollars. The Nano Foudroyante is Greubel Forsey's 10th "Fundamental Invention," and was limited to only 22 timepieces in its release. While a traditional foudroyante consumes 30 microjoules per jump, the Nano Foudroyante consumes only 16 nanojoules, according to Greubel Forsey.