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A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11The Trematic T-Five Beigua Maris Shadow is a 39 mm Grade 5 titanium automatic dive watch with a 45.5 mm lug-to-lug length, La Joux-Perret G101 movement and a grey-to-charcoal gradient dial. Trematic lists 30 ATM water resistance and supplies two FKM straps. Its published dimensions make it a relatively compact option on paper, though the 13.8 mm height including the domed crystal is worth considering if you prefer a lower-profile watch.
What are the Trematic T-Five Beigua Maris Shadow specifications?
The figures below are Trematic’s published specifications, not independently verified test results. The maker’s official product listing describes the construction and components as follows.
| Specification | Trematic’s published details |
|---|---|
| Movement | Swiss automatic La Joux-Perret G101; 28,800 vibrations per hour (4 Hz), 24 jewels and a stated 68-hour power reserve |
| Case | Grade 5 titanium with sandblasted, polished and brushed sections |
| Water resistance | 30 ATM, as stated by Trematic |
| Bezel | Unidirectional, 120-click Grade 5 titanium bezel with matte ceramic insert and Swiss Super-LumiNova |
| Crystal | Ultra-domed sapphire with three-layer internal and external anti-reflective coating |
| Caseback | Screw-secured, with polished, brushed and sandblasted finishes |
| Dial and markers | Grey-to-charcoal gradient dial; applied wedge-shaped and Arabic hour markers; BGW9 blue-emission Lumicast indexes |
| Dimensions | 39 mm diameter excluding crown; 11.3 mm thick excluding crystal and 13.8 mm including it; 45.5 mm lug-to-lug |
| Lug width | 20 mm |
| Included straps | FKM strap with waterproof technical textile insert and deployant buckle; additional vintage-style FKM strap with regular buckle |
How big is the Beigua Maris Shadow on the wrist?
The 39 mm diameter and 45.5 mm lug-to-lug measurement are the key figures for judging its footprint. The lug-to-lug length can be especially useful if you are checking whether a watch will sit within the edges of your wrist. Trematic gives the diameter excluding the crown, and its 11.3 mm thickness excludes the domed crystal; the complete height is 13.8 mm. The crystal therefore adds 2.5 mm to the stated thickness.
Grade 5 titanium is the case material, but the listing does not give a watch weight, so there is no published figure to compare with a steel alternative. The 20 mm lug width identifies the nominal strap width, not guaranteed compatibility with every third-party strap, buckle or clasp.
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#1 Best Overall
- 330 ft. (100 M) water resistance. In general, suitable for recreational surfing, swimming, snorkeling, sailing and water sports.
- 12/24-hour timekeeping, 43 mm resin case with mineral dial window, Japanese quartz movement; Analog: 3 hands (hour, minute, second)
- Case / bezel material: Resin; Rotating bezel
- Day and date display at 3 o’clock
- Analog display, molded resin band with buckle closure; Accuracy: ±20 seconds per month
What distinguishes the Shadow dial?
Trematic describes the Shadow’s dial as a grey-to-charcoal gradient with BGW9 luminous indexes. The bezel also has a luminous insert. The listing specifies BGW9 blue-emission Lumicast for the indexes, but does not provide a measured brightness duration or independent lume test.
The dual-zone dial has applied wedge-shaped and Arabic hour markers. The combination of a dark gradient and blue-emission markers is the principal visual distinction of this version within the Beigua Maris range.
Rank #2
- Round watch featuring corrugated unidirectional bezel, luminous hands/markers, and magnified date window at 3 o'clock
- 40 mm, Length: 210mm, 23k gold-plated stainless steel case with mineral dial window. Movement Caliber: NH35A
- Japanese automatic movement with analog display
- Gold & Stainless steel tone bracelet with foldover clasp with safety closure
- Water resistant to 200 m (660 ft): In general, suitable for professional marine activity and serious surface water sports, but not scuba diving.
How does Shadow compare with Desert and Marina?
Trematic’s Beigua Maris collection page lists Shadow, Desert and Marina. The stated distinction is their dial and lume treatment:
| Variant | Dial and lume description from Trematic |
|---|---|
| Shadow | Grey-to-charcoal gradient dial with BGW9 luminous indexes |
| Desert | Full-lume bi-zonal dial combining BGW9 and Old Radium tones |
| Marina | Full-lume bi-zonal dial combining BGW9 and Old Radium tones |
The published pages do not establish different movement or case specifications for Desert or Marina, so the supported comparison is aesthetic rather than technical.
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- 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 do 30 ATM and the dive-watch features mean?
Trematic states 30 ATM water resistance and lists a screw-secured caseback, unidirectional 120-click bezel and sapphire crystal. These are manufacturer specifications; the product page does not provide independent dive testing or a certification statement. Treat the stated rating as the maker’s claim, and check the watch’s documentation and care guidance before relying on it for a particular activity.
What straps are included, and what should you check?
The product listing specifies two FKM straps: one with a waterproof technical textile insert and deployant buckle, and a vintage-style option with a regular buckle. The watch has a 20 mm lug width. Before buying a replacement or third-party strap, confirm its width and check whether its end shape and buckle arrangement suit the watch; lug width alone does not establish fit.
Rank #4
- Gold tone stainless steel case 48mm diameter x 12.5mm thick; Blue dial; Luminous hands and hour markers
- Japanese quartz movement, VD53 Caliber; Assembled in Japan; SR920SW battery included; Watch weight: 310 grams
- Gold tone stainless steel band, 215mm L x 26mm W; Band is adjustable by adding/removing links; Fold over safety clasp
- Flame Fusion crystal; Push/pull crown; Unidirectional stainless steel bezel with blue bezel ring; Functional Subdials: 60min, 60sec, 24 hour;200 meter water resistant: Suitable for professional marine activity and surface water sports. Suitable for diving.
What is the listed price and warranty?
When checked in 2026, Trematic’s UK listing showed a price of £1,150 GBP and said the watch was available for immediate delivery. The same listing states free worldwide shipping for watches and says prices include transportation, duties, taxes and VAT. It also advertises a five-year international warranty and points buyers to its sales conditions for exclusions. These are statements on the maker’s UK listing, not guaranteed terms for every market or future purchase. Check the current listing and checkout terms for local price, stock, delivery and warranty coverage.
What do customer reviews tell you?
The Trematic product page displays nine reviews. They include favorable impressions of comfort, finish and perceived value, alongside one buyer’s report of bezel back play and a strap that felt stiff and thick near the lugs. These are individual customer accounts, not controlled measurements or a representative survey, so they are best treated as points to consider rather than proof of a consistent issue or performance level.
Quick Recap
Best Value
- Stainless steel case 40mm diameter x 14mm thick; Exhibition case back; Black dial; Luminous hands and hour markers
- NH35A Japanese Automatic movement, 24 jewel; Assembled in Malaysia; Watch weight: 155 grams
- Stainless steel band, 210mm L x 20mm W; Band is adjustable by adding/removing links; Fold over safety clasp
- Mineral crystal; Screw-down crown; Diver stainless steel bezel with black top bezel ring; 200 meter water resistant: Suitable for professional marine activity and surface water sports. Suitable for diving.
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.
