Tap the image to enlarge
Ulysse Nardin Diver X Skeleton 44mm Titanium Case And Bezel
Ref. 3723-170-1A/3A
See more premium optionsHide
Stepping up in Ulysse Nardin's range
The Diver X Skeleton sits at the more architectural end of Ulysse Nardin's dive lineup — a 175-piece limited edition that treats the movement as the primary visual element rather than concealing it behind a conventional dial. The white X-shaped bridge suspended at the centre is the structural logic made visible: it holds the dial together while leaving the calibre open to view from both sides through sapphire crystals front and back. The UN-372 runs a silicon hairspring, anchor, and escape wheel — a combination that removes the movement's sensitivity to magnetic fields and reduces the wear that eventually forces a service on a conventional lever escapement. For a watch rated to 200 metres and built to go in the water, that matters more than it would in a dress piece. The 72 to 96-hour power reserve means it will restart on a Monday morning after a weekend off the wrist. At 15.7mm thick it is not a watch that disappears under a cuff, and at 44mm it makes no concession to subtlety. The white rubber strap and white bezel give it a coherent, deliberately monochromatic character that the blue seconds hand and blue detailing on the X interrupt in exactly the right amount.
- Reference
- 3723-170-1A/3A
- Brand
- Ulysse Nardin
- Case size
- 44mm
- Case thickness
- 15.7mm
- Case material
- Titanium
- Case shape
- Round
- Dial
- Silver
- Crystal
- Sapphire
- Bezel
- Unidirectional rotating
- Movement
- Automatic
- Calibre
- UN-372
- Functions
- Skeleton dial
- Water resistance
- 200m
- Bracelet / strap
- Rubber strap
- Strap colour
- White
- Clasp
- Deployant clasp
- Lume
- Super-LumiNova
- Retailer
- Goldsmiths
Learn more about Ulysse Nardin
Leonard Ulysse Nardin founded his workshop in Le Locle in 1846 and specialised in marine chronometers — the instruments ships used to determine longitude, where an error of seconds meant an error of miles.
The house became one of the two or three most important chronometer makers in the world. More than fifty navies used Ulysse Nardin instruments, and the company holds an extraordinary record at observatory trials: over four thousand certificates and dozens of gold medals, more precision awards than any other manufacturer.
Its modern era began in 1983 when Rolf Schnyder bought the failing company and partnered with Ludwig Oechslin, a scientist and horological historian. The results were the Astrolabium Galileo Galilei of 1985, which displays the positions of sun, moon, and stars and entered the Guinness records as the most functional wristwatch, followed by the Planetarium and Tellurium — together the Trilogy of Time.
Oechslin also designed the Freak of 2001, arguably the most radical wristwatch of the modern era: no dial, no hands, no crown. The entire movement rotates to indicate the time, and it was the first watch to use silicon components in the escapement, a material now standard across the industry.
The Marine collection continues the chronometer heritage. Kering acquired the brand in 2014.
- 1846
- Leonard Ulysse Nardin founds the workshop in Le Locle.
- 1985
- The Astrolabium Galileo Galilei is released.
- 2001
- The Freak pioneers silicon escapement components.
- 2014
- Acquired by Kering.
Also in 6 collections
This watch appears in Back in Stock (3,460), Automatic Watches (1,573), Sports Watches (696), Silver Dial Watches (577), Watches 44mm and Over (569) and Dive Watches (499).
Manufacturer’s guarantee
What the specifications mean
A mechanical watch built to be worn hard and got wet.
Strengths
- 200m water resistance, rated for actual diving
- Sapphire crystal, which resists scratching
- Luminous hands and markers for low light
Worth knowing
- 44mm sits at the larger end
- 15.7mm thick, so it will not disappear under a cuff
Ulysse Nardin Diver X Skeleton alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | 3723-170-1A/3A | 95.9201.9004/25.I001 | 1-36-13-03-90-33 |
|---|---|---|---|
| Price | £24,390 | £24,200 | £25,400 |
| Case size | 44mm | 45mm | 43.2mm |
| Water resistance | 200m | 200m | 300m |
| Movement | Automatic | Automatic | Automatic |
| Strap | Rubber strap | Titanium bracelet | Rubber strap |
| Power reserve | — | 50 hours | — |
| This watch | Closely matched |
|
Your new watch
Frequently asked questions, and things you should know about this watch
Can I swim with it?
Yes. At 200m it is rated for swimming, snorkelling and recreational diving.
Water resistance explainedWill the glass scratch?
Unlikely. Sapphire is second only to diamond in hardness and shrugs off everyday marking.
Sapphire, mineral and acrylic comparedDoes it need a battery?
No. It is automatic — the motion of your wrist winds it, and there is no cell to replace.
Quartz, automatic and solar comparedCheapest place to buy
Goldsmiths is the only UK retailer we track stocking this reference, so there is nothing to compare it against today.
More Ulysse Nardin watches like the Diver X Skeleton
In stock, and close on style and price
