The Top 5 Sinn Watches That Fly Under The Radar
Another Friday, another list. This week’s Top 5 is a collaboration with German watchmaker Sinn. As many of you know, we’re fans of the brand, and some of us own several of its timepieces. Sinn’s focus on functionality has earned it a strong reputation for tool watches. That utilitarian approach has also shaped a distinctive aesthetic that I’ve come to appreciate. Yet, as this list shows, the Frankfurt-based company offers plenty of variety. Let’s look at five Sinn watches that fly under the radar.
Sinn’s extensive collection offers plenty of favorites, but my top pick has remained the same since its release. When the Sinn T50 arrived in 2023, I was immediately drawn to the two-tone version on a gray silicone strap. Two-tone watches — especially those combining gold and steel — are often associated with luxury brands like Rolex. Sinn, however, demonstrates that contrasting materials can also serve a practical purpose. Titanium and the brand’s proprietary Goldbronze make the T50 lightweight and highly resistant to corrosion. It also looks fantastic. The T50 remains my favorite Sinn watch and proves that functionality and striking looks can go hand in hand. The five watches below make the same case in different ways.
Sinn 857 S
We’ll start with the Sinn 857 S, a stealthy pilot’s watch based on the popular 856. The 857 adds a rotating bezel with a 60-minute scale, giving it extra utility. At first glance, its restrained appearance seems almost minimalist. Look closer, though, and you’ll find a few clever details.
The stainless steel case measures 43 mm across, 12 mm thick, and 22 mm between the lugs. It has a black hard coating on top of Sinn’s Tegiment treatment, which increases the hardness and scratch resistance of stainless steel and titanium. This case’s water resistance is rated to 200 meters (20 bar).
The 857 S can withstand magnetic fields up to 100mT (80,000 A/m). A nickel-free case back conceals the Sellita SW300-1, a 25-jewel automatic caliber with a 28,800vph frequency and a 42-hour power reserve. Sinn offers the watch with a range of strap/bracelet options, and our example came on the black-coated stainless steel bracelet. That version costs €2,610, and the bracelet’s matching finish gives the watch a solid, understated presence.
For a more traditional look, you can choose one of the various leather straps, which lend the 857 S a more retro character. You could also opt for a fabric strap to bring out its military side or a silicone one for a sportier feel. Inspired by aircraft cockpit instruments, the 857 S has evolved into a versatile tool watch suited to everyday wear.
Sinn 1739 St I S
Many people may not know this, but Sinn also makes dress watches, and the 1739 St I S is a fine example. Its polished stainless steel case measures 39 mm wide and just 9.1 mm thick. It is also water- and pressure-resistant to 100 meters (10 bar).
An onion-style crown sits at 3 o’clock, while the black electroplated dial has a sunburst finish. A slightly recessed center adds depth, and long, sharply defined applied indexes give the face its character. I also like Sinn’s restraint in design, keeping the logo as the only text on the upper half of the dial.
Turn the watch over, and you’ll find the Sellita SW300-1, the same automatic caliber used in the 857 S. It offers a 42-hour power reserve.
A black leather strap complements the watch’s clean lines. Sinn also offers leather and textile alternatives, as well as a black silicone strap. I’d choose one of the leather or textile options to preserve the 1739 St I S’s elegant character. This watch retails for €1,990.
Sinn 6096
Sinn’s Frankfurter Finanzplatzuhren, or Frankfurt Financial District Watches, receive less attention than some of the brand’s other collections, though enthusiasts will recognize them. Inspired by the company’s hometown, one of the world’s major financial centers, these watches have a distinctive visual identity.
The Frankfurt World Time models are among the collection’s most popular members, and the Sinn 6096 sits at the top of the range. Its polished case measures 41.5 mm across, 10.1 mm thick, and 22 mm between the lugs. A matte black dial with a sunburst finish provides the backdrop for hand-applied, rhodium-plated, lume-filled indexes.
Inside the hour and minute scale is a 24-hour display for a second time zone, while a rotating ring around the dial’s edge carries a 12-hour scale for tracking a third. The central hour and minute hands are joined by a slim seconds hand and a smaller GMT hand. At 6 o’clock, a black date disc with white numerals blends nicely into the dial.
Powering the watch is the Sellita SW330-1 caliber. This 25-jewel automatic GMT movement operates at 28,800 vph and offers a 42-hour power reserve. You can view it through the case back’s sapphire display. Sinn also adds a custom rotor engraved with a bull and bear, traditional symbols of the Frankfurt stock market.
At €3,220, the Sinn 6096 is a slim, versatile watch that slips easily under a cuff and helps track time in major financial centers. It’s also a standout from one of Sinn’s most recognizable collections.
Sinn 206 St Ar
The next pick is my favorite on this list. It’s the Sinn 206 St Ar, the brand’s modern take on a traditional diving chronograph and a sibling of the 206 Arktis II, which Robert-Jan reviewed in 2019. Its vintage-inspired styling might initially suggest it’s a vintage pilot’s chronograph, but the construction and features are thoroughly contemporary.
It starts with a 43 × 17mm stainless steel case with a 300m depth rating. The watch also meets the DIN ISO 6425 diving standard. Sinn’s proprietary Ar-Dehumidifying Technology further improves reliability and helps prevent fogging. The black electroplated dial features large Arabic numerals and a three-register layout with chronograph counters at 6 and 12 o’clock and running seconds at 9. The day and date windows sit at 3 o’clock, while luminous hands keep the displays legible in low light. Brushed and polished surfaces add contrast to the case, while the unidirectional rotating bezel carries a 60-minute diving scale. You’ll also find the screw-down crown and chronograph pushers on the right flank.
The Valjoux 7750-based Concepto C99001 powers the Sinn 206 St Ar. This automatic chronograph caliber runs at 28,800 vph, has 25 jewels, and offers a 48-hour power reserve. The sapphire display case back lets you see it at work.
On the wrist, the 206 feels reassuringly solid. Although its 17mm thickness makes it a substantial watch, I found it more comfortable than the measurements suggest.
The five-row stainless steel bracelet is robust and balances the case well. Sinn also offers other bracelet and strap options that give the watch a different character. On the steel bracelet, the €4,340 Sinn 206 St Ar is a capable, purposeful diving chronograph that looks as convincing as it feels.
Sinn EZM 12
The EZM 12 rounds out the list of under-the-radar Sinn watches. It belongs to the brand’s series of Einsatzzeitmessers, or mission timers, developed for professionals such as pilots, divers, firefighters, emergency physicians, rescue workers, and members of specialist police and military units. The EZM 12 was designed specifically for air rescue, with functions that can help save lives. Its 43 × 14mm stainless steel case has a bead-blasted finish for a subdued, satin appearance, and the watch is water-resistant to 200 meters (20 bar).
Sitting atop the case is a black bezel with a white 60-minute countdown scale. Both the bezel and case itself feature Sinn’s Tegiment treatment for added scratch resistance. The brand’s Ar-Dehumidifying Technology helps prevent fogging, and the watch resists magnetic fields up to 100 mT (80,000 A/m). For air-rescue crews, the rotating bezel can help medical personnel track when to administer medication.
A watch with very specific functions
The rotating inner bezel has a 60-minute scale for tracking the “platinum 10 minutes” and the “golden hour,” two critical windows in emergency care. The “golden hour” is the period in which a patient should reach a hospital after an accident; “platinum 10 minutes” refers to the time in which a critically injured patient should receive initial treatment and be transported. The rotor-shaped seconds hand helps users measure patients’ heart rates every 15 seconds against the dial’s pulsometer scale. The day and date displays sit at 9 o’clock, leaving room for that scale.
Powering the EZM 12 is the 25-jewel ETA 2836-2 automatic caliber. It runs at 28,800 vph and provides a 42-hour power reserve. It’s a proven choice for a watch built around a demanding, life-saving job. The EZM 12’s unusual purpose and execution also garnered it industry recognition.
First, the watch won the Red Dot Product Design Award in 2019, and then it earned the Excellent Product Design prize at the 2020 German Design Awards. These honors underline the thought behind this highly functional tool watch. The Sinn EZM 12 costs €3,690 — a price that seems secondary if it helps save a life.
Final thoughts on our top five under-the-radar Sinn watches
There you have it — the top five Sinn models that fly under the radar. The five picks show just how varied the brand’s collection is, though plenty of other models could have made the list. What do you think of our pick? Are there any other Sinn watches you would choose instead? Let us know in the comments, and we’ll see you next week for another list.
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