Introducing: The Sinn 613 St And 613 St UTC Diving Chronographs
In a world where dive watches increasingly serve as crossovers between daily timepieces and backups for dive computers, Sinn doubles down on hardcore tool divers. The press materials for the new Sinn 613 St and 613 St UTC read like a very serious proposition for a clientele wielding underwater welding equipment rather than a snorkel and a ticket to the tropics. But hey, Sinn is all business, and we wouldn’t expect anything else.
Today, we see the introduction of two new diving chronographs. Ref. 613 St features a day-date complication, while 613 St forfeits the day for a second time zone. Both come with the familiar elapsed-time bezel and many of Sinn’s technical features. Let’s dive in! I apologize for the pun, but I promise it is the last spaß we’ll have in this very serious article.
The new Sinn 613 St
We’ll start with the simpler of the two new references, the Sinn 613 St. If you think this looks familiar, you’re on to something. In essence, the 613 flips the existing EZM 13.1 around and adds a day display. The EZM 13.1’s destro configuration makes way for a crown and pushers on the right side. With the running seconds now at 9, the 4:30 date moves to 3 and gets an added day display. Meanwhile, Sinn paints the sub-dial — displaying the chronograph’s minute counter — white for added contrast.
The materials and dimensions remain the same. This means the bead-blasted stainless steel case still measures 41mm across by 15mm thick. You still get Sinn’s Ar-Dehumidifying capsule to prevent fogging. The 500m water resistance, certified externally, also remains. The entire package, in good Sinn tradition, meets DIN 8310 and 8306 norms for water resistance and diving equipment.
Sinn does not engage in silly storytelling or marketing fluff. Instead, we get more specs, such as resistance to magnetic fields of up to 80,000 A/m, low-pressure resistance, and a sapphire crystal with an antireflective coating on both sides. I told you, it’s all very serious stuff!
The new Sinn 613 St UTC
Okay, but what if your underwater welding jobs lead you all over the globe? In that case, you’ll want the new Sinn 613 St UTC! This will tell you what the fam at home is up to while you are fixing the submersed plumbing of a faraway off-shore platform.
The Sinn 613 St UTC has the same specifications as the non-UTC version. The only difference is in the omittance of the day display in favor of a second time zone. Cleverly, Sinn painted the UTC hand a dark gray. This ensures it does not get in the way of the legibility of the crucial diving features.
Both new watches run a version of Sinn’s caliber SZ02. This self-winding movement traces its roots to the Sellita SW515 and, eventually, to the Valjoux 7750. Sinn modifies it rather heavily, as showcased by the atypical minute counter at 6 o’clock. The movement ticks at 28,800vph and offers 42 hours of autonomy.
Initial impressions
So, what do we think of the new Sinn 613 St and 613 St UTC? To be fair, there is little to say that has not been said before. These watches offer everything we know and love from Sinn and nothing radically new or different. We could complain about the 15mm thickness or the rather brutalist design, but that would be to miss the point entirely. Sinn never set out to design an elegant diver for everyday (read: dry) use. These are hardcore tools with the looks to match and the features to back up their claims.
In that light, I think Sinn did well with these two new references. A minute-focused chronograph backed up by an elapsed-time bezel is about as solid as you can get. If your life truly depends on it, I can imagine this offers reassurance. All in all, these are very serious dive watches for very serious divers.
What do you think of the new Sinn 613 St and 613 St UTC? Let us know in the comments below!
