Sinn’s Goes Deep with the New U50, a Medium Sized Pro Diver with a Distinctive Look

For years, the Sinn U1 has been a go-to diver for watch lovers after something deeply toolish, with advanced modern dive watch tech, in a uniquely German utilitarian design. It’s a distinctive and capable watch, but it has always had one problem that made it something of an impossibility for many: its 44mm diameter. In steel, this is an enormously chunky watch that even fans of big divers with major wrist presence have to seriously think about. Now, with the just announced U50, Sinn fans who looked at the U1 and silently thought “If only…” to themselves finally have a watch to call their own.

Sinn U50

  • Case Material: Stainless steel
  • Dial: Black
  • Dimensions: 41 x 11.1mm
  • Crystal: Sapphire       
  • Water Resistance: 500 meters  
  • Crown: Screw down                    
  • Movement: Sellita SW300-1
  • Strap/bracelet: Stainless steel bracelet, rubber  
  • Price: $2,180 – $2,940
  • Reference Number: U50, U50 SDR, U50 S, U50 T
  • Expected Release: Available for pre-order now, delivery in June 


It turns out, the aforementioned Sinn fans weren’t silently pining away for a more modestly sized for Sinn’s flagship diver at all, many were asking the brand to make the very watch you see here today. And Sinn, listening carefully to their dedicated customer base, has delivered. The U50, at a glance, looks just like the U1. It has the same distinctive oversized syringe style hands, the pops of red, and squared off hour markers. But this new watch is a much more manageable 41mm in diameter. It’s also significantly thinner, coming in at just a little over 11mm in height. That’s a downright svelte diver, and should wear really comfortably.

Impressively, Sinn hasn’t skimped out on specs – the U50 is an eminently capable diver. It has a full 500 meters of water resistance (the U1 is good to 100o meters, but the trade off of depth rating for a thinner case will be well worth it for many), and is still crafted from corrosion resistant submarine steel. Sinn has also employed their “tegimenting” process to the U50’s bezel, making it virtually impossible to scratch. The movement is the Sellita SW300-1, and of course the watch is fitted with a sapphire crystal and screw down crown. 

There are several versions of the U50 available at launch. The most standard variant comes in the traditional bead-blasted that U1 fans are already familiar with, and includes a tegimented steel bezel. The U50 SDR takes the steel bezel and gives it a black PVD coating (also tegimented), and the U50 S gives the whole watch, bracelet included, the black PVD treatment. In addition to the H-link bracelet each version can be ordered on a rubber strap, and if you’re after a fully tegimented U50 without the black PVD, Sinn has you covered with the U50-T, available in limited quantities. 

The U50 has a significantly smaller footprint than the U1

The U1 was, and is, a pretty special watch (and recently highlighted in our roundup of modern divers) but the size was a barrier to entry for many. The new U50 solves the problem that the U1 inadvertently created, offering a tech-forward dive watch, built like a tank, in a style that is unlike anything else on the market (besides the U1, of course). With a ton of variety in the lineup, there’s a U50 for everyone. Sinn

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Zach is a native of New Hampshire, and he has been interested in watches since the age of 13, when he walked into Macy’s and bought a gaudy, quartz, two-tone Citizen chronograph with his hard earned Bar Mitzvah money. It was lost in a move years ago, but he continues to hunt for a similar piece on eBay. Zach loves a wide variety of watches, but leans toward classic designs and proportions that have stood the test of time. He is currently obsessed with Grand Seiko.