38 mm isn’t thin — Speedmaster 38’s 14.75 mm on a 6.5 in wrist
Omega lists the Speedmaster 38 at 38 mm wide, 44.96 mm lug-to-lug, and 14.75 mm thick. Lug-to-lug is the tip-to-tip length of the case. 44.96 mm lug-to-lug alone is Moderate. The 14.75 mm thickness moves it to High.
Hodinkee’s 25 August 2026 introduction prints 44.96 mm lug-to-lug and 14.75 mm thick (third-party).
Fit on 6, 6.5, and 7 in wrists
Usable span is circumference ÷ π × 0.92: 44.630 mm at 6 in (152.4 mm), 48.349 mm at 6.5 in (165.1 mm), and 52.068 mm at 7 in (177.8 mm). A ratio at or under 0.90 is Low risk, through 1.00 is Moderate risk, and above 1.00 is High risk. Omega’s 14.75 mm thickness is at or above 13 mm, so a Low result becomes Moderate and a Moderate result becomes High. High stays High.
| Wrist | Lug-to-lug | Thickness | Fit note |
|---|---|---|---|
| 6 in (152.4 mm) | 44.96 mm | 14.75 mm | High risk: 44.96 ÷ 44.630 = 1.007, which is already past the flat top of a 6 in wrist (about 44.6 mm). Thickness does not move a High result. |
| 6.5 in (165.1 mm) — reference | 44.96 mm | 14.75 mm | High risk: 44.96 ÷ 48.349 = 0.930, which is Moderate. 14.75 mm thick moves it up one level. |
| 7 in (177.8 mm) | 44.96 mm | 14.75 mm | Moderate risk: 44.96 ÷ 52.068 = 0.863, which is Low. 14.75 mm thick moves it up one level. |
No published S$ price for the Speedmaster 38. Try it on, or compare a watch you own with the Fit checker.
Zenith Chronomaster Sport
Zenith’s Chronomaster Sport is 41 mm wide and 13.6 mm thick. Fit: Incomplete (lug-to-lug unpublished). Watch Advice lists 47 mm and Telling Time lists 46.2 mm (third-party). Two third-party figures differ (46.2 mm, 47 mm), so neither is scored. The 13.6 mm thickness is Zenith’s. It would move a scored result up one level.
The Hour Glass lists S$17,100 for 03.3100.3600/69.M3100 (retailer listing).
Seiko Speedtimer SSC813
Seiko lists the Speedtimer SSC813 at 39 mm wide, 45.5 mm lug-to-lug, and 13.3 mm thick. Fit: High risk on a 6.5 in wrist. 45.5 ÷ 48.349 = 0.941, which is Moderate, and 13.3 mm moves that result up one level. No published S$ price. This is the solar chronograph, not HBC003 or HBC004.
The three cases together
| Model | Width | Thickness | Lug-to-lug | Fit on a 6.5 in wrist |
|---|---|---|---|---|
| Omega Speedmaster 38 | 38 mm | 14.75 mm | 44.96 mm | High risk. Thickness moves Moderate up one level. |
| Zenith Chronomaster Sport | 41 mm | 13.6 mm | Unpublished | Fit: Incomplete (lug-to-lug unpublished). |
| Seiko Speedtimer SSC813 | 39 mm | 13.3 mm | 45.5 mm | High risk. Thickness moves Moderate up one level. |
Singapore dealers
The authorised dealers guide lists Omega boutiques at ION Orchard, Marina Bay Sands, Sentosa, and Changi T1, and Omega dealers at Cortina (Capitol), Sincere (Takashimaya, Suntec), The Hour Glass (VivoCity), Watches of Switzerland (Paragon), and Gassan, Time Emporium and Maison de Chronus (Changi). It lists a Zenith boutique at Marina Bay Sands, and Zenith dealers at Cortina (Capitol, Raffles City, Paragon), Sincere (Takashimaya, Suntec), The Hour Glass (VivoCity), and Luxury Ventures (Sentosa). Seiko’s points of sale are in the same guide.
Sources
- Omega — Speedmaster 38, 324.20.38.50.02.002
- Hodinkee — Speedmaster 38, 25 August 2026 (third-party)
- Zenith — Chronomaster Sport 03.3100.3600/69.M3100
- The Hour Glass — 03.3100.3600/69.M3100 (retailer listing)
- Watch Advice — Chronomaster Sport (third-party)
- Telling Time — Chronomaster Sport (third-party)
- Seiko — Speedtimer SSC813
- By style — chronographs