Vacheron Constantin Harmony Dual Time contains Vaheron's self-winding Calibre 2460 DT, which provides a dual-time display (on the sub-dial at 4:30) as well as a day/night indication (on the sub-dial at 7:30).  More @ http://www.watchtime.com/wristwatch-industry-news/watches/new-vacheron-constantin-harmony-watches-to-debut-at-watchtime-new-york-2016/ #vacheronconstantin #watchtime #menswatches #watchnerd
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