San Martin · Factory brand · China
San Martin SN021 B3 37mm (PT5000)
- PT5000
- 37 mm × 11.3 mm
- Sapphire crystal
- 100 m water resistance
Where to buy
- San MartinWorldwide
Movement
- Caliber
- PT5000
- Type
- Automatic
- Tier
- Mid
- Complications
- Hours, Minutes, Seconds
- Frequency
- 28,800 bph
- Power reserve
- 38 h
- Hacking
- Yes
- Accuracy (factory)
- -12 / +12 s/day
Case
- Diameter
- 37 mm
- Lug to lug
- 45.9 mm
- Thickness
- 11.3 mm
- Lug width
- 20 mm
- Material
- Steel (316L)
- Hardening
- —
- Water resistance
- 100 m
- Crown
- Screw-down
- Case back
- Solid, screw-down
- Bezel
- Fixed
Crystal & dial
- Crystal
- Sapphire
- Shape
- Box
- Anti-reflective
- Yes (side not stated)
- Lume
- BGW-9 blue on hands and markers
Bracelet & clasp
- Style
- Oyster
- Links per row
- 3
- Solid end links
- —
- Solid links
- Yes
- Link attachment
- —
- Taper
- 20 → 16 mm
- Quick release
- —
- Half links
- —
- Clasp
- Fold-over
- Micro-adjust
- Tool (pin holes), 4 positions
- Diver extension
- —
Weight
- Head only
- —
- On bracelet
- —
- On strap
- —
- Stated weight (basis not given)
- 126 g
Prices
| Variant | Configuration | Type | Price | USD | As of | Source |
|---|---|---|---|---|---|---|
| All | — | Street | 326 USD | $326 | 2026-10-24 | link |
Variants
| Name | Reference | Dial |
|---|---|---|
| Matte black dial | SN021-G-B3 | matte black |
| Light blue dial | SN021-G-B3 | light blue |
| Enamel green dial | SN021-G-B3 | green enamel |
| Dark blue dial | SN021-G-B3 | dark blue |
About this entry
84% of key specs known. Missing: hardening, end links, link attachment.
The SN021-G-B3 listing (written "SN0021-G-B3" in its spec list) sells this case with a PT5000 at $326 or a Sellita SW200 at $456, in matte black, light blue, enamel green or dark blue (dark blue was added after the spec text, which lists the other three), with or without logo at the same price. This file is the PT5000 version; see sn021-b3-sw200 for the Sellita SW200. Brand specs: 316L, 37mm (36mm bezel), 45.9mm lug-to-lug, 11.3mm (not stated whether that includes the crystal), 20mm lugs, top-hat sapphire with AR coating (side not stated), polished steel bezel (recorded as fixed with no insert), 3D hour markers, snowflake hands, BGW-9 blue lume on hands and markers, screw-down crown with hexagon logo, brushed screw-down caseback, solid 316L bracelet 20mm tapering to 16mm, folding clasp with safety and 4 micro-adjust holes (recorded as tool micro-adjust; the listing says the clasp has since changed to a thinner one), 100m, about 126g (not stated what was weighed). Bracelet style is from photos. The dial design (baton and dot markers, snowflake hands) matches the SN021-G-B2, but the B2 listing quotes 45.5mm lug-to-lug against 45.9mm here, so the B3 is kept as its own model rather than a variant of sn021-b1-pt5000; merge them if a review shows one case. Inspired_by is read from the design (36mm-class case with smooth bezel, snowflake hands, dot and baton markers) and the variation photos' file names, which say "BB36"; the brand does not name the Tudor. The movement has a date but the photos show no date window, so complications are time only. Every variation showed "Out of stock" on 2026-10-24, so production status is unknown.
Last verified: 2026-10-24. Edit or correct this entry.