From the SIHH, MB unveiled just one technical modern chronograph based upon a Minerva caliber, the TimeWalker Chronograph 100.
Minerva created a few versions of watches which second hand was able to complete a full 360° circuit of the dial. Precisely this principle is employed by the TimeWalker Chronograph 100 with its newly developed calibre MB M66.25.
Due to its need for a frequency of 360,000 semi-oscillations per hour, the TimeWalker Chronograph 100 cannot rely on the same mechanical principle as a conventional chronograph calibre, which vibrates at 2.5 or 4 hertz. That's why MB developed a caliber with two balances. A large, massy, screw balance oscillates at a frequency of 18,000 A/h (2.5 Hz) for the going train, while a small balance paced at 360,000 A/h (50 Hz) regulates the chronograph.
The chronograph function is powered by its own barrel, which stores enough energy to measure intervals up to 45 minutes.
Concentric hands track the elapsed minutes and seconds on the sub-dial at six o’clock, whilst the red center-seconds hand indicates the 1/100th measurement on the outside ring.
My opinion ?
I just love the finishing of the dial. At the first glance, it appeared quite strange to me, not very sexy to be honnest. But I finally learnt to love its "no compromise", techy, modern look & feel. Because it's a pretty techy piece, as a matter of fact !