Ulysse Nardin Diver Chronometer

The Ulysse Nardin Diver Chronometer (Ref. 1183-170-7M/92) connects the brand's marine chronometer history with modern dive watch construction. I'd been watching this piece for a while before finally adding it to my collection.

Design and aesthetic

The titanium bracelet is a standout feature - lightweight yet sturdy, and noticeably more comfortable than stainless steel for all-day wear. The inverted, concave bezel and domed sapphire glass give the watch a distinctive profile that separates it from more conventional diver designs.

Functionality

The lume is excellent - easy to read in dark conditions. The power reserve indicator at 12 o'clock is practical and integrates well into the dial layout. Despite having a small seconds subdial and date window at 6 o'clock, the dial stays legible. The unidirectional bezel has good tactile feedback with each click. Each watch has a unique number plate, which adds to the sense of owning something specific rather than mass-produced.

Movement

The Caliber UN-118 is the heart of this watch - 260 parts, 50 jewels, running at 4 Hz (28,800 vph) with a 60-hour power reserve. The silicon escapement technology should improve long-term accuracy and reduce service needs. The exhibition caseback is an unexpected feature for a 300-meter dive watch, but it lets you see the movement's finishing.

Strap options

I wear the titanium bracelet most days, but also have the rubber strap for sportier occasions. Swapping between them is tedious - you need tools, unlike brands like Cartier that have figured out quick-change systems. This is an area where Ulysse Nardin could improve.

{ "title": "Ulysse Nardin Diver Chronometer, Ref. 1183-170-7M/92", "score": 3.94, "recommend": true, "ratings": { "Movement": 4.4, "Case": 4.2, "Dial": 3.9, "On the wrist": 4.1, "Value": 3.5 }, "pros": [ "UN-118 with silicon escapement, 260 parts, 50 jewels, and 60-hour reserve improves accuracy and reduces service.", "Titanium bracelet is noticeably lighter and more comfortable than stainless steel for all-day wear without sacrificing durability", "Inverted concave bezel and domed sapphire glass create a distinctive profile that separates it from conventional dive watch designs", "Exhibition caseback is an unexpected feature for a 300-meter dive watch, letting me appreciate the movement's finishing", "Each watch has a unique number plate, adding to the sense of owning something specific rather than mass-produced" ], "cons": [ "Strap-change system requires tools and is tedious compared to quick-change systems from brands like Cartier", "Power reserve indicator at 12 o'clock, while practical, adds visual complexity to the dial", "Exhibition caseback is a compromise choice for a dive watch, as solid casebacks typically offer better protection", "Unidirectional bezel, while functional, doesn't offer anything innovative beyond standard dive watch specifications", "Rubber strap option requires purchasing separately and then dealing with the cumbersome swap process" ] }

Final thoughts

The Ulysse Nardin Diver Chronometer (Ref. 1183-170-7M/92) does what it sets out to do: combine nautical heritage with serious dive watch specs. The titanium construction, silicon escapement, and individual numbering give it character. The strap-change situation is annoying, but that's a minor complaint for what you get otherwise. If you want a diver that doesn't look like every other diver, this one is worth a look.