Unimatic · Microbrand · Italy
Unimatic Modello Quattro UT4 GMT
- Ronda 515.24D
- 40 mm × 13 mm
- Sapphire crystal
- 300 m water resistance
Where to buy
Movement
- Caliber
- Ronda 515.24D
- Type
- Quartz
- Tier
- Mid
- Complications
- Date, GMT
- Frequency
- n/a
- Power reserve
- n/a
- Hacking
- n/a
- Accuracy (factory)
- -10 / +20 s/month
Case
- Diameter
- 40 mm
- Lug to lug
- 49 mm
- Thickness
- 13 mm
- Lug width
- 22 mm
- Material
- Steel (316L)
- Hardening
- —
- Water resistance
- 300 m
- Crown
- Screw-down
- Case back
- Solid, screw-down
- Bezel
- Fixed
- Finishing
- Sandblasted
Crystal & dial
- Crystal
- Sapphire
- Shape
- Flat
- Anti-reflective
- Inner
- Lume
- Super-LumiNova C1
Bracelet & clasp
- Style
- —
- Links per row
- —
- Solid end links
- —
- Solid links
- —
- Link attachment
- —
- Taper
- —
- Quick release
- Yes
- Half links
- —
- Clasp
- —
- Micro-adjust
- —
- Diver extension
- —
Straps
- Strap 1
- Nylon, quick release, Black two-piece nylon strap with nylon keeper, sandblasted hardware signed UNIMATIC
Weight
- Head only
- 82 g
- On bracelet
- —
- On strap
- 97 g
Prices
Variants
| Name | Reference | Dial | Status |
|---|---|---|---|
| UT4-GMT | UT4-GMT | matte black, printed Arabic numerals, 24-hour window at 12 with orange pointer, date at 6, C1 lume, white open seconds rail, international orange trims and seconds tip | In production |
About this entry
74% of key specs known. Missing: hardening, bracelet links, end links, link attachment, clasp micro-adjust.
The GMT version of the Modello Quattro UT4, launched with it in July 2024 in Unimatic's permanent Toolwatch collection (Fratello) and sold continuously in yearly batches: the same sandblasted fixed-bezel case and 360° protection system (TPU gasket above the dial and TPU movement holder, MIL-STD-810H certified according to Unimatic), but on a Swiss Ronda 515.24D quartz instead of the UT4's Seiko VH31, so a separate model. The second time zone is read in 24-hour format on a disc through a window at 12 with an orange pointer, and the date window is at 6. Specification from Unimatic's UT4-GMT spec sheet: 40mm case with a fixed monoblock bezel, 49mm lug to lug, 28.4mm case opening, 12.7mm without the crystal and 13mm with it (Fratello: 12mm), 22mm drilled lugs, 316L steel (the page spec list says 316), 8mm screw-down 'Alchemical Sun' crown between angular crown guards (photos), screw-down caseback with the '360° X-ray' engraving, individually tested to 300m, 2.8mm flat sapphire with anti-reflective coating on the inner side, 82g head and 97g on the strap. Matte black dial with printed Arabic numerals, C1 lume, white open seconds rail, international orange trims and seconds tip. Unimatic quotes -1/+20 s/month and about 45 months on an SR920SW cell, with no regulation claim; Ronda's instructions give -10/+20 s/month. Prices are Unimatic's euro prices for Italy, VAT included; Fratello gave 525 EUR before taxes at launch. The watch is also sold as a 'Bracelet Premium Set' (ref. UT4-GMT-UBR) with a sandblasted quick-release steel bracelet, the nylon strap and a tough case instead of the travel pouch, recorded as a second price; no clasp details are published.
Last verified: 2026-10-25. Edit or correct this entry.
Sources
- UNIMATIC, Modello Quattro UT4-GMT (product page) accessed 2026-10-25
- UNIMATIC, Modello Quattro UT4-GMT Bracelet Premium Set, ref. UT4-GMT-UBR (product page) accessed 2026-10-25
- UNIMATIC, Modello Quattro Toolwatch UT4-GMT tech specs (PDF) accessed 2026-10-25
- UNIMATIC, Modello Quattro UT4-GMT-UBR tech specs (PDF; adds the bracelet) accessed 2026-10-25
- Fratello, Unimatic Adds The New Toolwatch Series To Its Permanent Collection (UT1, UT1-GMT, UT4, UT4-GMT, July 2024) accessed 2026-10-25