The Sjöö Sandström Royal Steel Worldtimer is an automatic dual-time watch offered in 36 mm and 41 mm sizes. The choice is less about a different movement or water-resistance rating—the standard models share those specifications—and more about case proportions, finish, dial and strap configuration. Sjöö Sandström lists a 50-hour power reserve, a second time-zone hour hand and a 24-hour bezel; that describes a dual-time display, not a verified 24-city world-time complication.
What the Royal Steel Worldtimer does
The main hour and minute hands show local time. A separate hour hand indicates a second time zone, with the 24-hour bezel providing a day/night reference. Sjöö Sandström describes the watch as a way to “easily juggle two time zones when you are on the fly”; that is the manufacturer’s product description, not an independent performance finding. See the 36 mm product page or 41 mm product page.
This layout can be useful for keeping home time visible while traveling, but the published description establishes two-zone tracking rather than a city ring or simultaneous display of many world time zones. Both standard sizes use the Swiss-made automatic SS G16 caliber, with a stated 50-hour power reserve. The caliber details list manual winding, quick date correction and time setting with stop seconds.
36 mm vs 41 mm: dimensions and specifications
The most consequential published difference is the 5.1 mm gap in lug-to-lug length. The 41 mm model is also 5 mm wider across the case. Both have a 20 mm lug width, so the nominal strap width is shared, though that alone does not confirm that a particular strap, end link or clasp will fit.
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| Specification | 36 mm | 41 mm |
|---|---|---|
| Case diameter | 36 mm | 41 mm |
| Lug to lug | 44.90 mm | 50 mm |
| Lug width | 20 mm | 20 mm |
| Case thickness | 9.70 mm | 9.20 mm |
| Movement | SS G16, Swiss-made automatic | SS G16, Swiss-made automatic |
| Stated power reserve | 50 hours | 50 hours |
| Water resistance | 10 ATM | 10 ATM |
| Displayed standard configuration prices | 22,600 SEK rubber; 26,200 SEK steel bracelet | 25,500 SEK rubber; 30,100 SEK stainless-steel bracelet |
Figures and displayed prices are from Sjöö Sandström’s standard product listings, accessed in 2026; configurations, availability and prices can change. Check the 36 mm listing and 41 mm listing for current options and pricing.
Which size is more likely to suit you?
The 36 mm case has the shorter 44.90 mm lug-to-lug measurement, while the 41 mm reaches 50 mm. Those dimensions make the 36 mm the more compact option on paper and the 41 mm the broader-wearing one, but wrist shape and personal preference matter; diameter alone cannot predict fit. If possible, compare the lug-to-lug span and how the case sits across your wrist before choosing. The 36 mm is listed as 9.70 mm thick and the 41 mm as 9.20 mm, so the larger case is not the thicker of the two according to the published measurements.
Rank #2
- Swiss Made Watch
- Movement: Automatic MIDO caliber with GMT function and Date calendar - Power reserve 80 hours
- Case Type: Diver-style stainless steel case with blue rotating bezel - Capable of withstanding pressures of up to 20 bar (200 m/660 ft), and equipped with a screw-down crown, this diver watch offers optimal protection against water.
- Case Size: 40.5mm - Case Thickness: 13.43mm - Decompression worldtimer design blue dial offering hand and indexes filled with Super-Luminova - Crystal: Glassbox-style sapphire crystal.
- Band Type: Stainless steel milanese bracelet with sliding clasp Additional rubber strap with pin buckle closure included- Lug Width: 21mm
Dial, finish and strap configurations
The manufacturer lists multiple dial and strap configurations. The 36 mm page specifies a stainless-steel case. The 41 mm page lists stainless steel and black DLC-finished stainless-steel variants. Standard price examples differ by strap configuration: rubber or steel bracelet for the 36 mm, and rubber or stainless-steel bracelet for the 41 mm. Confirm the exact variant shown on the product page; a displayed price should not be assumed to apply to every dial or finish.
Materials, legibility and water resistance
For both sizes, Sjöö Sandström lists a sapphire front crystal and sapphire caseback with anti-reflective coating, white Super-LumiNova index marks and hands, and 10 ATM water resistance. These are manufacturer-published specifications, not results of independent crystal, lume or pressure testing. Follow the maker’s instructions and check the current manual for use and care guidance rather than treating a rating as a guarantee for every water activity.
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- AVI-8 - OUR STORY: The brand inspiration and design excellence originates from the collaboration between pilots and engineers who served in air forces around the world. Every collection is an explicit homage to the planes, people and history of military aviation. Each timepiece brings to life the detail and narrative of the inspiration to delight and engage the wearer.
- MOVEMENT: The Wingman Worldtimer GMT Automatic is powered by a Japanese TMI NH34 24 Jewels GMT dual time and date automatic movement
- THE FINER DETAILS: Featuring a 41mm Stainless Steel Case , 22mm Genuine Leather Strap,an Extra 22mm Nylon Strap,Anti Reflection Coating Sapphire Lens and Water Resistance Of Up To 5 ATM.
- WARRANTY: 2 years International Warranty
Is it a good travel watch?
Its practical travel feature is the second hour hand: it allows a second time zone to remain visible alongside the main time display. The bezel’s 24-hour markings help distinguish the other zone’s day from night. That makes the design relevant to travelers who want a home-time reference without relying solely on a phone, while the published specification does not establish other conveniences such as a jumping local-hour hand or a full city-based world-time mechanism.
The SS G16 is automatic and has a stated 50-hour power reserve. If the watch is left unworn beyond that reserve, it will need winding and time-setting before use; the manufacturer lists manual winding and quick date correction among the caliber functions. The listing does not establish independent accuracy, so buyers should not infer a measured daily gain or loss from the movement description.
Rank #4
- AVI-8 - OUR STORY: The brand inspiration and design excellence originates from the collaboration between pilots and engineers who served in air forces around the world. Every collection is an explicit homage to the planes, people and history of military aviation. Each timepiece brings to life the detail and narrative of the inspiration to delight and engage the wearer.
- MOVEMENT: The Wingman Worldtimer GMT Automatic is powered by a Japanese TMI NH34 24 Jewels GMT dual time and date automatic movement
- THE FINER DETAILS: Featuring a 41mm Stainless Steel Case , 22mm Genuine Leather Strap,an Extra 22mm Nylon Strap,Anti Reflection Coating Sapphire Lens and Water Resistance Of Up To 5 ATM.
- WARRANTY: 2 years International Warranty
Price and availability
In the manufacturer’s product listings accessed in 2026, the 36 mm examples were 22,600 SEK on rubber and 26,200 SEK on a steel bracelet; the 41 mm examples were 25,500 SEK on rubber and 30,100 SEK on a standard stainless-steel bracelet. These are page-specific displayed prices in Swedish kronor, not a guarantee of current local pricing or stock. Verify the precise size and configuration on the relevant 36 mm or 41 mm page before purchase.
The brand’s site provides a manual download and a route to find a boutique or speak with a specialist. A Swedish retailer also lists a 41 mm model, but that listing alone does not establish current stock or authorized-dealer status: Mårtenssons Ur listing.
Best Value
- AVI-8 - OUR STORY: The brand inspiration and design excellence originates from the collaboration between pilots and engineers who served in air forces around the world. Every collection is an explicit homage to the planes, people and history of military aviation. Each timepiece brings to life the detail and narrative of the inspiration to delight and engage the wearer.
- MOVEMENT: The Wingman Worldtimer GMT Automatic is powered by a Japanese TMI NH34 24 Jewels GMT dual time and date automatic movement
- THE FINER DETAILS: Featuring a 41mm Stainless Steel Case , 22mm Genuine Leather Strap,an Extra 22mm Nylon Strap,Anti Reflection Coating Sapphire Lens and Water Resistance Of Up To 5 ATM.
- WARRANTY: 2 years International Warranty
Limited edition: SAS 80 Years
Sjöö Sandström presents a Royal Steel Worldtimer Limited Edition SAS 80 Years as a 300-piece edition connected to SAS’s 80th anniversary in 2026. The official edition page establishes the limited-edition framing and production quantity; it does not establish continuing availability or a price that can be inferred from the standard models.
What this review can and cannot establish
The available basis for evaluating the standard Royal Steel Worldtimer is its published specification and configuration information. No independent timing result, hands-on comfort assessment, finishing observation, water test or long-term reliability evidence is established here. Service interval, warranty scope and repair costs also require confirmation from current official documentation or a named seller.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
