The German brand will soon start selling its new Sinn EZM 10 “Einsatzzeitmesser” Pilot automatic chronograph watch with a 24-hour GMT display.
As the German watchmaker readily admits, the new watch is a tribute to timekeepers that were powered by the legendary caliber Lemania 5100. No longer in production, it was adored by the German military thanks to an almost unrivalled legibility that it provided. The secret, of course, was in the unique layout of its chronograph display.
While most mechanical chronographs have their minute hands counting time with not terribly usable and very tiny 30-minute totalizers, the Lemania 5100 was equipped with a centrally positioned minute counter with a standard 60-minute scale. Since the watch preserved the tri-compax layout, the freed sub-dial was reserved for a 24-hour second time zone indicator.
The new Sinn EZM 10 Pilot Chronograph basically reproduces this design.
The watch, too, has a central seconds and jump-action minute counter, a 24-hour second time zone display at 3 hours, a subsidiary seconds display at 9 hours, and a 12-hour chronograph totalizer at 6 o’clock.
Since the good old Lemania 5100 is (to say the least) in short supply these days, the German engineers took a well-known ETA Valjoux 7750 industry workhorse and thoroughly modified it in-house in order to reproduce functionality of the cal. 5100.
Called Sinn caliber SZ01, the movement is built on 34 jewels and features a DIAPAL lubricant-free escapement that has the traditional for the Swiss anchor escapement palette jewels substituted with diamond palettes. Hence the name: DIA+PAL.
The whole setup was placed inside a feather-weight 44 millimeter case crafted from so called “tegimented” (specially hardened in order to dramatically increase its scratch-resistance) titanium alloy. Being around 15.60 millimeters in height, the watch is clearly not the slimmest timekeeper on the market, but you can’t call it gargantuan either.
Trying to justify the unusually high price of the new pilot’s watch, the Germans also equipped its rotating bezel with a sapphire crystal insert that, besides making the bezel more pleasant to look at, also increased its scratch-resistance: it is usually the lacquered finish of the bezel that shows the first signs of wear.
As usual for the EZM series, the dial of the watch features high-contrast design with luminous hands, hour markers and Arabic numerals on the rotating bezel.
According to the watchmaker, the watch will be supplied on a leather or a silicone strap, or you can pay around €300 more and get it on a titanium bracelet.
Sinn EZM 10 “Einsatzzeitmesser” Chronograph Automatic watch specification
Price: €3950 (leather strap) / €4170 (silicone strap) / €4250 (titanium bracelet)
Movement: Automatic, Sinn caliber SZ01 (base ETA Valjoux 7750), Made in Germany
Number of jewels: 34
Movement frequency: 28,800 vph
Movement decoration: N/A
Functions: Hours, minutes, seconds, date, GMT, chronograph
Power reserve: 42 hours
Case material: Titanium, tegimented
Bezel material: Titanium with sapphire insert
Crown material: Matches case
Case shape: Round
Bezel shape: Round
Case size: 44.00 mm
Lug width: 22.00 mm
Case height: 15.60 mm
Hour markers: Luminous
Water resistance: 200 meters
Strap: Titanium bracelet or leather strap or silicone band
Crystal: Sapphire, antireflective
Case back: Solid