5 Sports Field GMT
Ref. SSK023
- Case diameter
- 39.4 mm
- Manufacturer spec
- Lug-to-lug
- 47.9 mm
- Manufacturer spec
- Thickness
- 13.6 mm
- Manufacturer spec
- Lug width
- 20 mm
- Manufacturer spec
Retail price $450 (US, Oct 2026)
How the 5 Sports Field GMT wears
Its lugs reach 8.5 mm past the 39.4 mm case, more than the 7 mm typical across the almanac, so it wears larger than its diameter suggests.
On our fit model it sits best on wrists from 6.75" to 8" (17.1–20.3 cm); below 6.75" the lugs start to reach the edge of the wrist.
At 13.6 mm thick it is thicker than 75% of the 36 other gmt watches we've measured, so expect it to sit tall on the wrist.
Its 20 mm lug width is one of the most common strap sizes; 186 other watches here share it, so aftermarket straps are easy to find.
Will the 5 Sports Field GMT fit your wrist?
With a 47.9 mm lug-to-lug, here is how it wears across common wrist sizes. We estimate the flat top of each wrist from its circumference; measure yours for a closer answer in the fit finder.
| Wrist | Flat width (est.) | Fit |
|---|---|---|
| 6" | 47.2 mm | Lugs overhang |
| 6.5" | 51.2 mm | Snug, lugs near the edge |
| 7" | 55.1 mm | Ideal fit |
| 7.5" | 59.1 mm | Ideal fit |
| 8" | 63 mm | Ideal fit |
Specifications
- Reference
- SSK023
- Collection
- 5 Sports
- Status
- In production
- Case material
- stainless steel
- Crystal
- Hardlex
- Water resistance
- 100 m
- Bezel
- fixed
- Dial
- black
- Strap / bracelet
- multi-link stainless steel bracelet, three-fold clasp with secure lock
- Weight
- 147 g
- Style
- GMT, Field
Movement
- Caliber
- Seiko 4R34
- Type
- automatic
- Power reserve
- 41 hours
- Jewels
- 24
3 other watches use the Seiko 4R34
Takes 20 mm straps. See other 20 mm watches and straps.
More 5 Sports references
- Seiko5 Sports Field Sports StyleSRPG27
- Case
- 39.4 mm
- Lug-to-lug
- 48.1 mm
- Thick
- 13.2 mm
- Seiko5 Sports Field Sports Style 36mmSRPJ85
- Case
- 36.4 mm
- Lug-to-lug
- 44.4 mm
- Thick
- 12.5 mm
- Seiko5 Sports MilitarySNZG13
- Case
- 42 mm
- Lug-to-lug
- —
- Thick
- 12 mm
- Seiko5 Sports SKX Sports StyleSRPD53 · “5KX Pepsi”
- Case
- 42.5 mm
- Lug-to-lug
- 46 mm
- Thick
- 13.4 mm
- Seiko5 Sports SKX Sports Style GMTSSK001
- Case
- 42.5 mm
- Lug-to-lug
- 46 mm
- Thick
- 13.6 mm
- Seiko5 Sports SKX Sports Style GMTSSK003
- Case
- 42.5 mm
- Lug-to-lug
- 46 mm
- Thick
- 13.6 mm
- Seiko5 Sports SNXS SeriesSRPK89
- Case
- 37.4 mm
- Lug-to-lug
- 44.7 mm
- Thick
- 12.5 mm
- SeikoSeiko 5 Sports SKX Sports StyleSRPD55
- Case
- 42.5 mm
- Lug-to-lug
- 46 mm
- Thick
- 13.4 mm
Watches that wear the same size
Other watches within 1.5 mm of its lug-to-lug.
- CasioCasio MRW-200HMRW-200H-1BV
- Case
- 44.6 mm
- Lug-to-lug
- 47.9 mm
- Thick
- 11.6 mm
- Grand SeikoEvolution 9 Spring Drive 5 DaysSLGA009 · “White Birch”
- Case
- 40 mm
- Lug-to-lug
- 47.9 mm
- Thick
- 11.8 mm
- OmegaSeamaster Aqua Terra 150M 41220.10.41.21.03.005 · “Summer Blue”
- Case
- 41 mm
- Lug-to-lug
- 47.9 mm
- Thick
- 13.2 mm
- OmegaSeamaster Aqua Terra 150M 41220.10.41.21.01.001
- Case
- 41 mm
- Lug-to-lug
- 47.9 mm
- Thick
- 13.2 mm
- SeikoAstron GPS SolarSSJ025
- Case
- 42 mm
- Lug-to-lug
- 47.9 mm
- Thick
- 12 mm
- OmegaDe Ville Prestige Small Seconds 41434.13.41.20.03.001
- Case
- 41 mm
- Lug-to-lug
- 47.9 mm
- Thick
- 10.8 mm
Same 20 mm lug width
All 20 mm watchesThese take the same straps as the 5 Sports Field GMT.
- AutodromoMonoposto Series Two (Moss Green)BP-002-MG
- Case
- 43 mm
- Lug-to-lug
- 46 mm
- Thick
- 11 mm
- BalticAquascaphe Classic
- Case
- 39 mm
- Lug-to-lug
- 47 mm
- Thick
- 13 mm
- BalticAquascaphe Dual-Crown Black
- Case
- 39 mm
- Lug-to-lug
- 47 mm
- Thick
- 11.9 mm
- BalticAquascaphe GMT MK II
- Case
- 39.5 mm
- Lug-to-lug
- 47 mm
- Thick
- 13.8 mm
- BalticAquascaphe MK2 37mm
- Case
- 37 mm
- Lug-to-lug
- 45 mm
- Thick
- 12.9 mm
- BalticAquascaphe MK2 39.5mm
- Case
- 39.5 mm
- Lug-to-lug
- 47 mm
- Thick
- 12.9 mm