San Martin SN0008 BB58 40mm Diver Watch – NH35, PT5000, SW200, Sapphire, Ceramic Bezel, 200m

San Martin SN0008 BB58 40mm Diver Watch – NH35, PT5000 or SW200, Sapphire, Ceramic Bezel, 200m

The San Martin SN0008 BB58 is a 40mm retro-style automatic dive watch with a newly upgraded screw-structure 316L stainless steel bracelet, refined case and bezel edge lines, and a choice of automatic movement depending on the variant selected: NH35, PT5000, or Sellita SW200. Sapphire crystal with anti-reflective coating. 120-click unidirectional rotating aluminium bezel insert. Screw-down crown and case back. 200m water resistance. Available in Matte Black, Matte Black Gilt, Matte Blue, and additional grey, brown, and green colourways, including no-logo variants.

Key Specifications

Movement Options — NH35, PT5000, SW200

The SN0008 is available with three different automatic movement options, and the correct movement depends on the specific colour variant selected:

NH35 — a Japanese Seiko-based automatic movement, the standard choice across the matte black and matte blue colourways (SN0008C and SN0008D). 24 jewels, 21,600 vph, approximately 41-hour power reserve, with hacking and hand-winding.

PT5000 — manufactured in China by HK Precision Technology, a well-regarded clone of the Swiss ETA 2824-2. 25 jewels, 28,800 vph, approximately 38-hour power reserve, typical accuracy -10/+30 seconds per day. Offered on the gilt, grey, brown, and green colourways as a mid-tier upgrade from NH35.

Sellita SW200 — a genuine Swiss-made automatic movement from Sellita Watch Co., used across established Swiss brands. 26 jewels, 28,800 vph, 38–41-hour power reserve, standard-grade accuracy typically within ±12 seconds per day. The premium movement option on this listing, offered alongside PT5000 on the gilt, grey, brown, blue, and green colourways at a higher price point.

When ordering, confirm the exact movement listed against your selected colour and variant code — do not assume NH35 applies to every option, as PT5000 and SW200 are explicitly offered as separate selections on several colourways.

New Upgraded Construction

This SN0008D version includes several refinements over the earlier SN0008C:

• Screw-structure bracelet — an upgraded link construction method for the solid 316L bracelet, replacing the prior assembly approach.
• Optimised case and bezel edge lines — refined surface transitions between the case and bezel for a smoother, more refined profile.
• HD case and dial detailing — sharper definition on applied indices, the aluminium bezel insert, and the snowflake hands.

Vintage Diver Design

The SN0008 follows a classic retro dive watch layout — applied hour markers, GS Crafts snowflake-style hands, and a 120-click unidirectional rotating bezel with a luminous pip at 12 o’clock. The dial is available in Matte Black Gilt (warm gold-tone indices and text on a black dial), Matte Black, and Matte Blue, plus grey, brown, and green colourways on the higher movement-tier variants. No-logo options are also available for buyers who prefer a cleaner dial without the San Martin branding.

Sapphire Crystal

Sapphire crystal with anti-reflective coating — Mohs 9 hardness, scratch-resistant, with the AR coating reducing glare for improved dial visibility under direct light.

Luminous Details

Lume varies by dial colour: C3 green luminous coating is used on the Matte Black Gilt variant, while BGW-X1 blue luminous coating is used on Matte Black and Matte Blue variants. Both are applied to the hands, hour markers, and the bezel’s 12 o’clock pip.

Screw-Down Crown, Case Back, and 200m Water Resistance

The screw-down crown carries the San Martin 3D hexagon logo and seals against the case to protect against water ingress. The case back is also screw-down with a brushed finish. Combined, these give the watch a genuine 20Bar / 200m water resistance rating — suitable for swimming, snorkelling, and recreational diving. Always ensure the crown is screwed fully closed before water exposure, and avoid operating the crown or bezel underwater.

Solid Stainless Steel Bracelet

The upgraded 316L stainless steel bracelet uses solid links with female end links and the new screw-structure assembly, tapering from 20mm at the lugs to 16mm at the clasp. The folding clasp includes a safety lock and carries the San Martin hexagon logo. Total weight is approximately 145.6g.

Important Care Notes

Calendar adjustment timing: if your selected movement includes a date function, do not adjust the date, day, or month between approximately 8pm and 4am — the calendar mechanism is mechanically engaged during this window, and forcing the adjustment can damage the quickset mechanism.

Manual winding: automatic movements rely on wrist motion for daily winding — wear the watch at least 8 hours per day for consistent accuracy. To manually wind, turn the crown clockwise approximately 15 times with the crown in the closed (non-pulled) position.

Water exposure: if water vapour appears inside the case, a small amount will typically clear on its own within a couple of hours if the watch is worn with the case facing down. Visible water droplets inside the case require prompt servicing.

Magnetic fields: keep the watch away from strong magnetic sources (speakers, magnetic phone mounts, induction equipment) as magnetism can affect mechanical movement accuracy.

Saltwater rinse: rinse the watch with fresh water after saltwater exposure, and have gaskets checked periodically if you use the watch in water frequently, as water resistance can reduce over time.

Related San Martin Watches

For another BB58-style diver with vintage homage detailing, see the San Martin SN0128-G BB58 Snowflake Homage. For a smaller 37mm vintage dive option, see the San Martin SN0138 37mm Vintage Dive Watch. For a titanium dive watch with higher water resistance, see the San Martin SN0121TD Grade 5 Titanium Dive Watch (300m). For GMT options, see the San Martin SN0005B NH34 GMT Diver Watch. Browse the full range of San Martin watches available on this site for additional dial, movement, and case configurations.

FAQ

Which movement does my selected colour use? It depends on the variant. Matte Black and Matte Blue (SN0008C/D) typically use NH35. Black Gilt, Grey, Brown, and Green variants are offered with a choice of PT5000 or Sellita SW200. Always check the specific movement listed against your chosen colour and variant code before ordering.

What is the difference between PT5000 and SW200? The PT5000 is a Chinese-manufactured clone of the Swiss ETA 2824-2 — reliable and accurate at a lower price. The SW200 is a genuine Swiss-made Sellita movement with tighter standard accuracy and the credibility of established Swiss manufacture, at a higher price.

Is it waterproof for diving? Yes — 20Bar / 200m water resistance supports swimming, snorkelling, and recreational diving. Ensure the crown is fully screwed down before water exposure.

What is the “new upgrade” on this version? The bracelet now uses a screw-structure link assembly, and the case and bezel edge lines have been refined for a smoother profile compared to the earlier SN0008C version.

Does it come with a warranty? Yes — a 2-year warranty is included.

Can I get this watch without the San Martin logo? Yes — no-logo variants are available on select colourways (PT5000 and SW200 no-logo options are listed).

New Upgrade: Upgraded to a screw structure bracelet

New Upgraded Matte Black Gilt Dial, Luminous Effect: C3 Green Light

New Upgraded Matte Black Dial, Luminous Effect: BGW-X1 Blue Light

New Upgraded Matte Blue Dial, Luminous Effect: BGW-X1 Blue Light

Brand: San Martin
Model: SN0008-GC/SN0008-GCD New Upgraded
Movement: NH35 [Automatic mechanical movement]

Case: Material – 316L Solid Stainless Steel
Case Diameter: 40mm
Lug to Lug: 49.5mm
Thickness: 11.95mm
Band Length: 200mm/7.9in
Band width: 20mm x 16mm

Glass: Sapphire Crystal Glass, AR Coating
Bezel: 120 Clicks Unidirectional Rotating Aluminum Bezel Inserts, 12 O’clock Luminous Markers
Dial Color: Matte Black Gilt, Matte Black, Matte Blue,Hexagon Applied Logo
Hands: GS Crafts Snowflake Hands, Luminous Coating
Luminous: BGW-X1 Blue Light/ C3 Green Light, Hands and Markers
Crown: Screw-down Crown,With 3D Hexagon Logo,

Case Back: Screw-down Case Back, Brushed Process
Strap: Female End links, Upgrade Screw Structure 316L Solid Stainless Steel Bracelet, Size 20mm *16mm.
Clasp: Folding Clasp With Safety,With San Martin Hexagon Logo

Water Resistant: 20Bar=200 meters
Weight: about 145.6g
Warranty: 2 Year

Sapphire Crystal Glass

New Upgraded Case HD Details Display

Case & Bezel edge lines have been optimized for a smoother and more beautiful look

New Upgraded Dial HD Details Display

Applied Indices, Aluminum Bezel Inserts, Snowflake Hands

Screw-down Crown, With San Martin Hexagon Logo

Screw-down Case Back, Brushed Process

New Upgrade: Upgraded to a screw structure bracelet,

Upgrade Screw Structure 316L Solid Stainless Steel Bracelet, Size 20mm *16mm.

Folding Clasp With Safety,With San Martin Hexagon Logo