The high frequency 5Hz (36,000 vph) caliber VMF 6710 is an integrated chronograph movement (as opposed to an add-on) with an optimal configuration that includes a column-wheel (the smoother, more premium option as compared to a cam and lever), vertical clutch (which eliminates the jumping of the seconds hand at start as well as preventing loss of timekeeping accuracy during chronograph operation compared to a horizontal clutch), and triple return-to-zero hammer.
Interestingly, the clutch is off-centered and drives the chronograph seconds and minutes, but to enhance efficiency, the chronograph hours are powered directly by the barrel.
Measuring 30 mm x 6.95 mm, the movement consists of 315 parts, 42 of which are jewels, and a 22K gold central rotor mounted on ceramic ball bearings, with bi-directional winding. The watch is good for 65 hours of power reserve and has a fast rotating barrel.
Thanks to the 5Hz frequency, which is the same as the famed El Primero by Zenith, the watch is capable of 1/10th of a second chronograph precision.
Four variable interia adjustment blocks allow high-precision regulating of the free sprung balance wheel. A traversing balance bridge with two supports offers improved stability and shock resistance. The movement has a flat balance spring, mobile stud holder, and is COSC certified.
The movement bridges, mainplate, and components have chamfered edges and have been finished with a variety of straight and circular graining techniques.
Functions include hours, minutes, small seconds, date with semi-instant jump, chronograph with center seconds, 30-minute counter, 12-hour counter, and stop seconds.
Learn more at Vaucher.