Unimatic Modello Quattro U4S-T-LB: 40mm Titanium Field Watch With Half-Arabic Half-Roman Dial (LE 300)
Watches5 min readApr 28, 2026

Unimatic Modello Quattro U4S-T-LB: 40mm Titanium Field Watch With Half-Arabic Half-Roman Dial (LE 300)

Italian indie Unimatic drops its 2026 titanium Modello Quattro at 40mm, 65 grams, with a half-Arabic / half-Roman 1950s field-watch dial, mint-green NATO strap, 300m water resistance, and a 300-piece cap at EUR 1,470.

XLinkedIn

Description

Unimatic's annual titanium drop is one of the most consistently good value-for-money releases in indie watchmaking, and the new Modello Quattro U4S-T-LB Limited Edition is the cleanest iteration of that recipe yet. Lightweight Grade 2 sandblasted titanium 40mm case, 65 grams head-only, half-Arabic / half-Roman numeral dial in a deliberate 1950s Italian Army field-watch reference, mint-green NATO strap with signed titanium hardware, and a 300m water-resistance rating that puts it in genuine tool-watch territory.

This is what Unimatic does better than almost anyone in the price bracket: take a clear historical reference (Italian military issue), execute it in modern materials with thoughtful detail (sandblasted titanium, signed hardware, screw-down crown engraved with a sun symbol), and price it at EUR 1,470 / USD 1,660 in a strict 300-piece limited edition.

The "U4S-T-LB" reference unpacks as: U4 (Modello Quattro), S (slim case), T (titanium), LB (light blue lume) — and it's the latest in a string of Unimatic limited editions that have built up the brand's cult following since its 2015 launch.

Design

The case is sandblasted Grade 2 titanium, 40mm in diameter, with a fixed monoblock bezel and an unusual 8mm Alchemical Sun screw-down crown — engraved with the alchemical symbol for gold/sun, which is a quietly clever bit of mythology buried in the design. The screw-down caseback is engraved with NATO Military Symbols (line-art renderings of armed forces taxonomy) — pure Italian-army field-watch heritage, executed without the kitsch you'd expect.

The dial is sandblasted titanium colour with the brand's signature half-Arabic / half-Roman numeral layout — odd numerals in Roman, even in Arabic, a 1950s Italian Army standard. The handset is a "phantom ladder" design (faceted Plongeur-style) and the seconds hand is a reverse-lollipop with a cool-grey tip. All luminous fill is light-blue Super-LumiNova, picked because it dispatches the warmer green tones associated with vintage radium and gives the watch a more contemporary glow.

The 2.8mm flat sapphire crystal carries internal AR coating — flat (rather than domed) is faithful to the field-watch reference. The supplied strap is mint-green nylon NATO with signed titanium hardware, and the watch ships in a tough case with warranty card and an individually-numbered ID seal.

Specifications

  • Reference: U4S-T-LB
  • Case size: 40mm diameter
  • Case material: Sandblasted Grade 2 titanium
  • Bezel: Fixed monoblock, sandblasted titanium
  • Crown: 8mm Alchemical Sun screw-down (signed)
  • Caseback: Screw-down, engraved with NATO Military Symbols
  • Crystal: 2.8mm flat sapphire with internal anti-reflective coating
  • Dial: Sandblasted titanium colour, half-Arabic / half-Roman numerals, "phantom ladder" handset, reverse-lollipop seconds with cool-grey tip
  • Lume: Light-blue Super-LumiNova
  • Movement: Sellita SW200-1 b (Swiss automatic), individually tested for accuracy
  • Frequency: 28,800 vph (4 Hz)
  • Water resistance: 300 m / 30 ATM / 1,000 ft
  • Strap: Mint-green nylon NATO with signed titanium hardware
  • Weight: 65 g (head only)
  • Limited edition: 300 pieces, individually numbered
  • Price: EUR 1,470 / USD 1,660

What's Exciting

The most exciting thing about the U4S-T-LB is the sub-1,500-euro titanium proposition with 300m water resistance. Sandblasted Grade 2 titanium at 65 grams is genuinely lighter than most aluminium watches, makes the watch effectively forgettable on the wrist, and corrodes less than steel. The case construction is fully tool-grade — fixed monoblock bezel, screw-down crown, screw-down caseback — so this isn't a desk-diver titanium case for show.

The half-Arabic / half-Roman dial is also genuinely uncommon in modern watchmaking. The historical reference (1950s Italian Army issue) is specific enough that it doesn't read as generic vintage-revival design — it reads as a specific reference to a specific period, which is the line Unimatic has walked successfully for over a decade.

And the 300-piece limited edition at this price is rare enough to make the watch genuinely scarce on the secondary market. Unimatic releases historically appreciate or hold value, especially the titanium drops. The mint-green NATO is also a smart spring/summer pairing that doesn't require a strap swap to look right out of the box.

History

Unimatic was founded in 2015 in Milan by Giovanni Moro and Simone Nunziato, two industrial designers who set out to build watches with a clear visual identity rooted in late-modernist Italian product design (Castiglioni, Magistretti, Sapper). The brand's first model — the Modello Uno — was a 41.5mm dive watch with a sandblasted steel case and an oversized "thermometer" minute hand, and it sold out almost immediately. Subsequent Modelli (Due, Tre, Quattro, Cinque) all maintained the same design language but expanded across complications (chronograph, GMT, time-only).

The Modello Quattro is Unimatic's clean field watch — no rotating bezel, time-only, in 40mm. The U4S-T-LB is the latest titanium-cased iteration of the line, and the half-Arabic / half-Roman dial layout deliberately references Italian-army-issue field watches of the early 1950s. Unimatic's annual limited-edition titanium drops have become collector touchpoints — past examples (mint-blue, bronze, tropical green) sell out within hours of release. This 2026 release — 300 pieces, mint-green NATO, light-blue lume — is positioned as the "summer drop" of the year, and should follow the same allocation pattern as previous LE Quattros.

Sources

Gallery

3 photos
Gallery media 1
Click to expand