IOTA · Microbrand · United Kingdom

IOTA GMT

In production · GMT

IOTA London GMT with a brushed steel case and white dial on an ocean blue leather strap
Photo: IOTA
  • IOTA London GMT with a brushed steel case and white dial on a charcoal leather strap
  • IOTA New York GMT with a brushed gold PVD case and white dial with gold accents on a tan leather strap
  • IOTA Sydney GMT with a steel case and deep blue dial on an ocean blue leather strap
  • IOTA Hong Kong GMT with a matt black DLC case and black dial on a black leather strap
From $260 to $300
  • Ronda 515.24H
  • 40 mm × 8.5 mm
  • Sapphire crystal
  • 50 m water resistance

Movement

Type
Quartz
Tier
Mid
Complications
Hours, Minutes, Seconds, GMT
Frequency
n/a
Power reserve
n/a
Hacking
n/a
Accuracy (factory)
-10 / +20 s/month

Case

Diameter
40 mm
Lug to lug
—
Thickness
8.5 mm
Lug width
20 mm
Material
Steel (316L)
Hardening
—
Water resistance
50 m
Crown
—
Case back
Solid, screw-down
Bezel
—

Crystal & dial

Crystal
Sapphire
Shape
Flat
Anti-reflective
Both sides
Lume
—

Bracelet

Bracelet
Not offered

Straps

Strap 1
Leather, quick release, London, New York and Sydney: overstitched Italian Nappa leather lined with nubuck, in charcoal, tan or ocean at the same price; Hong Kong: waterproof French calfskin handmade in Germany, with a black buckle

Weight

Head only
—
On bracelet
—
On strap
60 g

Prices

VariantConfigurationTypePriceUSDAs ofSource
London—Msrp195 GBPincl. VAT$2602026-10-24link
New York—Msrp195 GBPincl. VAT$2602026-10-24link
Sydney—Msrp195 GBPincl. VAT$2602026-10-24link
Hong Kong—Msrp225 GBPincl. VAT$3002026-10-24link

Variants

NameDial
Londonwhite
New Yorkwhite
Sydneyblue
Hong Kongblack

About this entry

73% of key specs known. Missing: lug-to-lug, hardening, crown, lume.

IOTA's quartz GMT, sold as four city-named models with the same case, movement and crystal, recorded here as variants: London (brushed steel, matte white dial, black-tipped GMT hand), New York (brushed gold PVD, white dial with gold accents), Sydney (steel, deep blue dial, white GMT tip) and the Hong Kong special edition (matt black DLC case, caseback, crown and buckle, black dial; no edition size stated). The tech-spec pages agree for all four: Ronda 515.24H Swiss Made (11½ lignes, -10/+20 s/month; 45-month battery per the brand), 316L steel, 40mm, 8.5mm case depth (crystal inclusion not stated), 20mm lugs, 5 ATM, flat sapphire with AR on both sides, laser-etched screw-down caseback, gasket-sealed crown with laser-etched logo, diamond-cut hands, applied polished indices with matte batons at 12 and 6, and a 24-hour scale for the GMT hand. No date window (photos). Weight on the strap: 60g for New York, Sydney and Hong Kong, 57g for London. Sydney's case finish is given as "Polished" in its structured data and image file names but "Brushed Metal Finish" on its tech-spec page. Lume not stated. Prices on 2026-10-31, all in stock: London, New York and Sydney GBP 195 with any of the three straps, Hong Kong GBP 225; the store shows no VAT label, so prices are recorded as listed.

Last verified: 2026-10-31. Edit or correct this entry.

Sources