By Meor Amri Meor Ayob

Pierre DeRoche’s TNT Royal Retro model is unique as it has four (4) retrograde seconds’ hands function on four 10-second sectors. Coupled with two additional complications such as a power reserve and a date function, this particular piece is sophisticated. The skeleton case makes it a visual wonder.

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Movement

Mechanical automatic, exclusive Dubois Dépraz calibre, 50 jewels, decorated and engraved oscillating weight, 12-pivot central bridge and 4 satin-finished seconds bridges, moving retrograde hand indicators, hand affixed by a transversal pin, 4 retrograde seconds hands on gears, strip-spring return.

Functions

Hours, minutes, seconds with retrograde function on four 10-second sectors, date and power reserve.

Case

Black PVD-coated titanium middle, 47.5 mm Bezel, lugs, crown guard and crown in steel Anti-reflective sapphire crystal, front and back Water-resistant to 100 m (10 ATM/330 ft).

Bracelet/strap

Alligator with steel safety folding clasp.

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Honestly, I don’t get the need for the 4 retrograde second hands in 4 separate sectors of 10 seconds each. What about the final 20 seconds of the minute? Do we just assume it?

Engineering wise, it is an excellent piece of machinery.