Speake-Marin’s Sandblasted Titanium is an openworked automatic watch offered in 38 mm and 42 mm versions. Both use the maker’s SMA01 calibre, a Grade 5 titanium Piccadilly case and a three-dimensional small-seconds display at 1:30. The specifications below are from Speake-Marin and named retailers; they do not represent a hands-on inspection or wear test by this article’s author.
Two sizes, two references
Speake-Marin lists the Sandblasted Titanium in two case diameters. The 38 mm version is reference 413817440; the 42 mm is reference 414217440. The manufacturer describes both with the same 10.5 mm case thickness and the same SMA01 movement.
| Version | Reference | Case diameter | Case thickness | Movement |
|---|---|---|---|---|
| 38 mm | 413817440 | 38 mm | 10.5 mm, Speake-Marin specification | SMA01 automatic, Speake-Marin specification |
| 42 mm | 414217440 | 42 mm | 10.5 mm, Speake-Marin specification | SMA01 automatic, Speake-Marin specification |
These dimensions establish the diameter difference, but not how either watch will sit on a particular wrist. The reviewed specifications do not give lug-to-lug measurements or case mass, and there is no comparative wear testing here. Choose between the sizes based on the diameter you prefer and, where possible, try the specific version on before buying.
Sandblasted titanium and an openworked dial
The case is described by Speake-Marin as a new-generation Piccadilly case in Grade 5 titanium. It has anti-reflective sapphire crystals on the front and back, with a stated thickness of 10.5 mm. The black grained leather strap is paired with a titanium folding buckle.
#1 Best Overall
- 48 hour power reserve
- Chronograph hour-counter at 6 o’clock, minute-counter at 12 o’clock and central seconds
- Iconic Piccadilly case in titanium
The dial is sandblasted and openworked, leaving the movement visible as part of the display. Its most distinctive indication is a three-dimensional small-seconds counter positioned at 1:30. The visible barrel is engraved with Speake-Marin values, while the heart-shaped hands are polished and black PVD-coated. These are design and construction details from the maker’s product description, not observations from an independent physical inspection.
What the SMA01 movement offers
Speake-Marin identifies the movement as its automatic Calibre SMA01, with a fully integrated micro-rotor. The manufacturer lists 171 components, 33 jewels, a frequency of 4 Hz (28,800 vibrations per hour), and a 52-hour power reserve. It also gives the calibre’s diameter as 30.00 mm and height as 5.00 mm.
Rank #2
- Centrix Automatic Diamonds - R30008712
- Winding: Automatic, with an integrated micro-rotor.
- Construction: 171 components and 33 jewels, according to Speake-Marin.
- Frequency: 4 Hz / 28,800 vibrations per hour, according to Speake-Marin.
- Power reserve: 52 hours, according to Speake-Marin.
- Certification: Speake-Marin says the movement is COSC-certified and assembled and adjusted by hand. This is the maker’s stated specification; no independent accuracy test is established here.
The SMA01 specification is important when comparing this watch with other Openworked models. Speake-Marin’s broader collection material also describes Calibre SMA05, a different movement associated with a tourbillon and a 72-hour reserve. Those SMA05 figures do not apply to the Sandblasted Titanium, whose product page identifies the SMA01.
Price, water resistance and availability
At the time of the reviewed product-page information, Speake-Marin listed a suggested price of CHF 22,600 excluding taxes and cautioned that prices may change. The page offered pre-order and enquiry options. Watches of Switzerland listed the 42 mm reference at $28,000; that US retailer price has a different currency and market context, so it should not be treated as a direct conversion or as the price of the 38 mm version. Check the relevant seller for current pricing, taxes, stock and delivery terms.
The Tool Desk
Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Rank #3
- Rado Gent DiaStar Original Automatic 35 mm
- Black Dial with 12 Crystals and Date Display at 6 o'clock
- Gold Stainless Steel Bracelet with Deployment Clasp
- Sapphire Crystal Scratch Proof Resistant
- Case Water Resistance: 3 bar (30 m)
Water resistance needs similar care: Manfredi Jewels lists 3 bar/30 m for reference 414217440, the 42 mm version. The reviewed Speake-Marin product-page excerpt does not state a water-resistance figure, so 3 bar/30 m is a retailer-reported specification rather than a figure confirmed here from the maker. Consult the documentation for the exact watch and follow the manufacturer’s guidance before exposing it to water.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Which version should you consider?
The confirmed distinction between the two listed versions is case diameter: 38 mm or 42 mm. Speake-Marin specifies the same case thickness and SMA01 movement for the model, but the available figures do not establish differences in weight, proportions beyond diameter, or comfort. The best next step is to compare both references in person if possible, then confirm current price and availability with Speake-Marin or a retailer.
Rank #4
- Captain Cook Automatic - R32154208
Sources: Speake-Marin Sandblasted Titanium product page; Speake-Marin One & Two Openworked collection; Watches of Switzerland listing; Manfredi Jewels listing; WatchPro USA, October 31, 2023; Collective Horology video, May 17, 2024.
Quick Recap
Best Value
- Sleek & Functional Design: This sophisticated titanium men's watch showcases a distinctive dial layout with dedicated markers for minutes, 12-hour, and 24-hour time displays. Arabic numerals ensure optimal legibility, while the bold red-tipped second hand injects a subtle yet striking accent. The inclusion of a practical date window further elevates its everyday versatility.
- Lightweight & Durable Titanium Construction: Expertly crafted from titanium, this BERNY timepiece delivers a sleek, modern aesthetic in understated gunmetal tones. Renowned for its featherlight comfort and military-grade resilience, titanium provides unparalleled resistance to corrosion and daily wear. The reinforced screw-down case back ensures enhanced protection for long-term reliability.
- Clear AR Coated Sapphire Lens & Super Luminous: Fitted with an anti-reflective sapphire crystal, this automatic watch delivers unmatched clarity and scratch resistance. The watch hands and markers are coated with super-luminous material for easy readability even in low-light conditions.
- Precision Japanese Movement & 10ATM Water-Resistant: Powered by a precise Miyota 8215 automatic movement, this timepiece ensures accurate timekeeping and long-term reliability. With a 10ATM water resistance rating, it’s built to accompany you on outdoor adventures without compromise.
- Dual Safety Clasp Design: The secure double-lock clasp ensures your watch stays firmly in place, reducing the risk of accidental slips while delivering both comfort and style. If you have any inquiries about our products, our responsive and expert support team is always ready to assist with tailored solutions.
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.
