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Roger Dubuis Excalibur Chronograph Replica watch makes it easy: the amount in the watch's name stands for its true diameter, so that the Roger Dubuis Excalibur Chronograph Replica watch is a men's size watch. This particular one features the in-house automatic chronograph movement, quality RD681, that's powered by a micro-rotor.
The motion indoors, quality RD681, that shares quite a few similarities with caliber RD680 that's used from the La Monegasque Chronograph, that has been introduced in 2011, and the Pulsion Chronograph, which was released earlier this year. In comparisson to calibner RD680, the brand new caliber RD681 features an added date function.
Caliber RD681 includes a column wheel to trigger the chronograph and exhibits the emasured time onto a 30-minute counter, placed at 3 o'clock. The typical micro-rotor is constructed of tungsten, a heavy/dense material that may create enough rotating inertia for maintaining the most important spring wound. The motion has a power reserve of roughly 52 hours.