Unimatic · Microbrand · Italy

Unimatic Modello Quattro U4 GMT

Ref. U4-GMT · Limited · 2024 · Field, GMT

Unimatic Modello Quattro U4-GMT
Photo: Unimatic
  • Unimatic Modello Quattro U4-GMT-AEB Impronte
  • Unimatic Modello Quattro U4-GMT-AEG Impronte
  • Unimatic Modello Quattro U4-GMT-EMJDM E. Marinella
  • Unimatic Modello Quattro U4-GMT-MMC Morgan
  • Unimatic Modello Quattro U4-TS24B Todd Snyder
  • Unimatic Modello Quattro U4-TS24W Todd Snyder
From $831 to $1,599
  • Seiko NH34A
  • 40 mm × 13.9 mm
  • Sapphire crystal
  • 300 m water resistance

Movement

Type
Automatic
Tier
Entry
Complications
Date, GMT
Frequency
21,600 bph
Power reserve
41 h
Hacking
Yes
Accuracy (factory)
-20 / +40 s/day

Case

Diameter
40 mm
Lug to lug
49 mm
Thickness
13.9 mm
Lug width
22 mm
Material
Steel (316L)
Hardening
—
Water resistance
300 m
Crown
Screw-down
Case back
Solid, screw-down
Bezel
Fixed
Finishing
Brushed

Crystal & dial

Crystal
Sapphire
Shape
Flat
Anti-reflective
Inner
Lume
Super-LumiNova (C1 or GL C1; BG W9 on the U4-GMT-EMJDM)

Bracelet

Bracelet
—

Straps

Strap 1
Other, quick release, Charcoal grey tapered (22-20mm) two-piece TPU strap with brushed hardware signed UNIMATIC (U4-GMT)
Strap 2
NATO, Black and olive drab seatbelt NATO straps with brushed hardware signed UNIMATIC (U4-GMT-AEB, U4-GMT-AEG)
Strap 3
Nylon, quick release, E. Marinella blue double-layer nylon two-piece strap with UNIMATIC embroidery (U4-GMT-EMJDM)
Strap 4
Leather, quick release, Two-piece leather strap: Morgan upholstery pebble leather in biscuit and British blue, with hardware signed Morgan (U4-GMT-MMC); suede in black with black DLC hardware (U4-TS24B) or sand (U4-TS24W)

Weight

Head only
100 g
On bracelet
—
On strap
118 g

Prices

VariantConfigurationTypePriceUSDAs ofSource
U4-GMT—Msrp740 EURincl. VAT$8312026-10-25link
U4-GMT-AEB Impronte—Msrp795 EURincl. VAT$8922026-10-25link
U4-GMT-AEG Impronte—Msrp795 EURincl. VAT$8922026-10-25link
U4-GMT-EMJDM E. Marinella—Msrp253,000 JPYincl. VAT$1,5992026-10-25link
U4-GMT-MMC Morgan—Msrp895 GBPincl. VAT$1,1932025-09-26link
U4-TS24B Todd Snyder—Msrp988 USD$9882025-11-13link
U4-TS24W Todd Snyder—Msrp988 USD$9882025-11-13link

Variants

NameReferenceDialBezelConfigurationStatus
U4-GMTU4-GMTmatte black, C1 lume, cool grey open seconds rail and trims, GMT hand with a C1 hollow arrow tip, date at 6brushed fixed bezel with deep acid-etched 24-hour scalecharcoal grey tapered TPU two-piece quick-release strapLimited (300)
U4-GMT-AEB ImpronteU4-GMT-AEBmatte black, C1 lume, debossed open seconds rail and trims, GMT hand with a C1 hollow arrow tip, no dateplain fixed bezel; 24-hour scale printed in C1 lume on the crystalblack seatbelt NATO + olive drab seatbelt NATOLimited (250)
U4-GMT-AEG ImpronteU4-GMT-AEGaluminium colour, C1 lume, debossed open seconds rail and trims, GMT hand with a C1 hollow arrow tip, no dateplain fixed bezel; 24-hour scale printed in C1 lume on the crystalolive drab seatbelt NATO + black seatbelt NATOLimited (250)
U4-GMT-EMJDM E. MarinellaU4-GMT-EMJDME. Marinella blue with micro-pattern, BG W9 lume, matte white open seconds rail, trims and 24-hour scale, GMT hand with a BG W9 hollow arrow tip, date at 6plain fixed bezelE. Marinella blue double-layer nylon two-piece quick-release strapLimited (100)
U4-GMT-MMC MorganU4-GMT-MMCsport blue glossy soleil, cool grey numerals in Morgan's font and trims, GL C1 lume, brushed steel hands, GMT hand with a matte white hollow arrow tip, date at 6brushed fixed bezel with deep acid-etched 24-hour scalebiscuit pebble leather + British blue pebble leather two-piece quick-release strapsLimited (100)
U4-TS24B Todd SnyderU4-TS24Bmatte black military dial with even numerals, GL C1 dot markers, warm grey 24-hour scale and trims, GMT hand with a GL dark orange hollow arrow tip, no dateblack DLC plain fixed bezelblack suede leather two-piece quick-release strap, black DLC hardwareLimited (150)
U4-TS24W Todd SnyderU4-TS24Wwarm grey military dial with even numerals, GL C1 dot markers, matte black 24-hour scale and trims, GMT hand with a GL dark orange hollow arrow tip, no dateplain fixed bezelsand suede leather two-piece quick-release strapLimited (250)

About this entry

87% of key specs known. Missing: hardening, bracelet offered.

The GMT version of the Modello Quattro U4: the same fixed-bezel military case on a Seiko NH34A with an independent 24-hour hand, sold as numbered limited editions, each recorded as a variant. Common specification, from Unimatic's spec sheets: 40mm case with a fixed monoblock bezel, 49mm lug to lug, 28.4mm case opening, 13.7mm without the crystal and 13.9mm with it, 22mm drilled lugs, 316L steel, 8mm screw-down 'Alchemical Sun' crown between angular crown guards (photos), screw-down caseback, individually tested to 300m, 2.8mm flat sapphire with anti-reflective coating on the inner side; Unimatic quotes -20/+40 s/day and a power reserve over 41h, with no regulation claim. The recorded 100g head and 118g on a NATO strap are from the U4-GMT-AEB and AEG sheets; the other sheets give 98-99g and 112-114g on their leather or nylon straps. The 24-hour scale is acid-etched on the bezel, printed on the crystal or printed on the dial, depending on the edition. Dial, date window, lume, case finish and straps vary by edition, so complications are left to the movement (NH34: date and GMT) and the date window is noted per edition. Prices are the euro prices for Italy, VAT included, shown on each product page; where the store shows 0, the price comes from the partner's page or launch coverage, in its currency. Edition details. U4-GMT (2024, 300), the first: brushed case, bezel with a deep acid-etched 24-hour scale, matte black dial with C1 lume and cool grey trims, date window at 6, 'Timezone' caseback, charcoal grey tapered TPU strap. Its page links no spec sheet, its description begins 'Modello Uno ref. U4-GMT' and calls the steel 316, and its page header calls it time only; Fratello's launch review (September 2024) gives 40 x 49 x 13.9mm, 300 pieces and 600 EUR before taxes. U4-GMT-MMC (2025, 100) was made with the Morgan Motor Company and sold through Morgan's shop: acid-etched 24-hour bezel, sport blue glossy soleil dial with cool grey numerals in Morgan's font, GL C1 lume, brushed steel hands, date window at 6, Unimatic x Morgan caseback, biscuit and British blue pebble leather straps from Morgan's upholstery with hardware signed Morgan; its sheet gives 98g for the head and 114g on the strap. The store shows 0, so the price is the 895 GBP launch price from Monochrome (September 2025). U4-TS24B and U4-TS24W (2025, 150 and 250) were made with Todd Snyder and sold through Todd Snyder from 13 November 2025: black DLC case with a matte black dial and warm grey 24-hour scale (TS24B), or brushed case with a warm grey dial and black scale (TS24W), even numerals, GL C1 dot markers, GMT hand with a GL dark orange arrow tip, plain bezel, no date window (none on the sheets or in the photos), Unimatic x Todd Snyder caseback, suede quick-release strap in black or sand; their sheets give 99g and 112g. The TS24B page header calls it time only, and the TS24W page has no year tag. The store shows 0, so the price is the 988 USD launch price from HiConsumption, which search results also show on Todd Snyder's pages (they turn away automated requests); Acquire and Mr Stateless give 998 USD, and Mr Stateless 100 pieces for the black one where Unimatic's page and sheet say 150. U4-GMT-EMJDM (2026, 100) was made with the Neapolitan tie maker E. Marinella for Japan only (Unimatic's JDM line) and sold through Floens and E. Marinella shops there: E. Marinella blue dial with a micro-pattern (printed per the sheet, debossed per the description), BG W9 lume, matte white trims and 24-hour scale, date window at 6, E. Marinella ties caseback, blue double-layer nylon quick-release strap. Its sheet gives 13.8mm without the crystal and 14.1mm with it (Floens: 13.7mm), 99g and 112g on the strap; Floens says it is based on the UC4. Unimatic's store shows 0 and its page gives 230,000 JPY excluding tax at Floens, whose page shows 253,000 JPY including tax, recorded. The page has no year tag; it was added to the store in October 2026. U4-GMT-AEB and U4-GMT-AEG (2026, 250 each, Impronte collection): matte black or aluminium-colour dial with C1 lume and debossed trims, no date window (photos), 24-hour scale printed in C1 lume on the crystal, plain bezel, 'wrinkled' caseback, two seatbelt NATO straps; their descriptions call the steel 316 where the sheets say 316L; the year is from Fratello's launch article (August 2026), as the pages carry no year tag.

Last verified: 2026-10-25. Edit or correct this entry.

Sources