The Circula ProSea is a 40 mm automatic dive watch with a 46 mm lug-to-lug length, 20 ATM water resistance, and a Sellita SW200-1 Elaboré movement. Fratello’s reviewer wore a blue example for a week and reported that it was readable in varied conditions and ran at less than +2 seconds per day on that one watch. Those observations are distinct from Circula’s published specifications and are not guarantees for every ProSea.
What the Circula ProSea adds to the range
Circula is a German watchmaker based in Pforzheim. Fratello describes the ProSea as the brand’s fourth diver and credits designer Guy Bove with its design. The watch draws on the design language of Circula’s ProTrail, while its rounded, compact case and textured dial give it a character of its own. Circula’s ProSea Black listing identifies the model as product number PS-SH-SS.
The dial texture is inspired by manta-ray skin. Fratello’s reviewer described the blue dial’s pattern as resembling small bubbles, and noted the relatively narrow bezel. The effect makes the dial more distinctive than a plain diver’s face without crowding its time display.
How it wears, according to the hands-on review
Fratello’s Gerard Nijenbrinks reported wearing a blue ProSea for a week. He found it readable in varied conditions and praised the steel bracelet clasp’s quick adjustment. These are the reviewer’s impressions of that configuration and sample, not independent test results or a promise about every wearer’s experience. The reported dimensions—40 mm across, 46 mm lug-to-lug, and 12.9 mm thick including the crystal—give prospective buyers useful reference points, but wrist shape and personal fit still matter.
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- Stainless Steel case with Black Resin Band
- Black Dial with date window at 3 O'clock
- Luminous markers and hour hands; sweep second hand
- Anti-reverse bezel
- Water-resistant to 200 M (660 feet)
The article also reports that the review watch ran at not even +2 seconds a day during the wear period. That is one reviewer’s observation about one sample, not a model-wide accuracy rating. Circula’s published regulation figure is -5/+7 seconds per day.
Published specifications
| Feature | Circula’s published information |
|---|---|
| Case | 316L stainless steel, hand-sandblasted and surface-hardened; Circula states up to 1,200 Vickers |
| Diameter and lug-to-lug | 40 mm diameter; 46 mm lug-to-lug |
| Thickness | 11.7 mm without crystal; 12.9 mm including crystal |
| Lug width | 20 mm |
| Crystal | Slightly domed sapphire, with triple anti-reflective coating on the inside |
| Bezel | Unidirectional, 120 clicks, ceramic insert, luminous markings |
| Water resistance | 20 ATM; screw-down crown |
| Movement | Automatic Sellita SW200-1 Elaboré; 26 jewels; 28,800 vibrations per hour |
| Power reserve and regulation | Minimum 38 hours; typically 41 hours; stated regulation of -5/+7 seconds per day |
| Strap and bracelet | Hybrid strap with rubber inside and Cordura outside, or solid steel bracelet; quick-exchange system |
These are specifications stated by Circula. The 1,200 Vickers figure is the maker’s surface-hardening claim, not a separately reported test result.
Rank #2
- WATER-RESISTANT: these water-resistant men's dive watches are ISO scuba-approved to depths of 200 meters
- AUTOMATIC: these self-winding, automatic men's watches are powered by your movement, with a power reserve of 41 hours
- STAINLESS STEEL: features a durable 43.8mm stainless steel watch case and bracelet.
- LUMIBRITE DISPLAY: this men's automatic watch features a highly-legible display with LumiBrite hands and markers
- 4R35 CALIBER: equipped with the reliable caliber 4R35 automatic movement, this accurate men's watch keeps precise time
Bezel, lume, and practical details
Circula specifies a unidirectional diver’s bezel with 120 clicks and a ceramic insert. Fratello’s review likewise describes the insert and counterclockwise rotation. The bezel’s timing function is straightforward: align its marker with the minute hand to track elapsed time, using the bezel’s one-way movement to reduce the risk of accidentally extending the indicated interval.
The lume uses two colors. Circula specifies blue-glowing BGW9 on the hour and seconds hands and the indices, and green-glowing C3 X1 on the minute hand and bezel markings. The reviewer’s account of readability across varied conditions offers a hands-on impression, while the lume compounds and their placement are manufacturer specifications.
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- Stainless steel case 40mm diameter x 14.1mm thick; Exhibition case back; Black dial; Luminous hands.Band Length: 205mm
- NH35A Japanese Automatic movement, 24 jewel; Assembled in Malaysia; Watch weight 155 grams
- Includes gift box, instructions and 3 year limited manufacturer warranty; Invicta Customer Service can be reached at 1-800-327-7682 for questions (re: Additional links, band replacement, band adjustment, warranty questions, etc.)
Strap, bracelet, and configuration choices
Circula lists the ProSea with either a hybrid rubber-and-Cordura strap or a solid steel bracelet. The bracelet has a quick-exchange system and tool-free clasp adjustment, which the Fratello reviewer praised. Both options use the stated 20 mm lug width; that measurement alone does not establish that every aftermarket strap will fit the case or work with its quick-change attachment.
Fratello names blue, petrol, and anthracite/black versions. Check the specific regional product listing for the configuration, color, and included attachment currently offered.
Rank #4
- Iconic Promaster watches with advanced functions designed to venture to the deepest depths.
- 3 Hand, Date
- Silver-Tone Stainless Steel
- Luminous Hands and Markers and Mineral Crystal
- Sustainably powered by any light, with our Eco-Drive technology this watch never needs a battery. ISO Certified, 200M Water Resistant and 5 Year Limited Warranty
Price and availability depend on market and date
At the time of Fratello’s November 23, 2025 review, it reported prices of €1,090 on strap and €1,290 on the steel bracelet; WatchTime also reported those launch prices. Circula’s cited ProSea Black page displayed €1,090 including EU VAT and a 1–4 day delivery estimate. These are dated or page-displayed figures, not a guarantee of current price, stock, tax treatment, or shipping.
The official US ProSea Anthracite page displayed US$1,090 plus $99 for duties, fees, and shipping, with a 2–4 day delivery estimate when it was captured. Those are page-specific US-market terms, not universal landed costs or confirmation of current availability. Check the applicable regional listing before ordering.
Best Value
- Stainless steel case 43mm diameter x 12mm thick; Black dial; Luminous hands and hour markers
- Japanese quartz movement, PC32 Caliber; Assembled in Japan; SR626SW battery included; Watch weight: 170 grams
- Stainless steel band, 185mm L x 22mm W; Band is adjustable by adding/removing links; Fold over safety clasp
- Flame Fusion crystal; Screw down crown; Uni-directional stainless steel bezel with black top bezel ring; 100 meter water resistant: Suitable for recreational surfing, swimming, snorkeling, sailing and water sports. Not suitable for diving
What to compare before buying
The ProSea’s published dimensions and construction make it possible to compare it with other dive watches on concrete points rather than design alone. Consider:
- Fit: compare the 40 mm diameter, 46 mm lug-to-lug length, and 12.9 mm thickness including crystal with a watch whose fit you already know.
- Movement: weigh the SW200-1 Elaboré’s stated 38-hour minimum and typical 41-hour power reserve against the movement and reserve in alternatives.
- Diving features: check water-resistance rating, crown construction, bezel direction and action, and whether the bezel markings are legible in the conditions you expect to use it.
- Materials and lume: compare the ceramic bezel insert, sapphire coating, two-color lume layout, and Circula’s stated case-and-bracelet surface hardening.
- Wear configuration: factor in whether you prefer the hybrid strap or steel bracelet, and inspect clasp adjustment and attachment compatibility for your intended setup.
- Total purchase terms: confirm current regional price, taxes, duties, delivery, and stock for the exact variant.
Fratello’s review is a hands-on account of one blue watch, not a head-to-head comparison with named alternatives. It can inform expectations about that sample’s wear and readability, but it does not establish that the ProSea outperforms another model.
The design idea behind the ProSea
Fratello quotes designer Guy Bove: “Less is more, but too little is not always enough.” The line suits the ProSea’s balance of a textured dial, a relatively restrained bezel, and clearly differentiated luminous elements: a distinctive surface without sacrificing the basic cues a diver’s watch needs.
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.
