Watch Specification:
Brand: San martin 
Model: SN004 Limited edtion
Movement: NH35 [automatic mechanical movement]
V1&V2 difference: stainless bezel and ceramic bezel insert
Case material: 316L Stainless Steel 
Caseback: Screw-in solid caseback
Bezel: V2 version is matte ceramic bezel insert. 120 clicks.
Watch mirror: Sapphire Crystal Glass, AR Coating
Dial Color: Black or blue
Luminous:
Black dial: Retro Luminous Effect SLN C3 Green Light, Hands and Markers
Blue dial: Swiss BGW9-blue light, Hands and Markers
Crown:Screw-down Crown, Hex logo for new production batch.
Case Back: Screw-down Case Back, Brushed Process
Strap: 316L Solid Stainless Steel Oyster Bracelet
Clasp: Folding Clasp With Safety, New Fly Adjustable Clasp,With San Martin Hexagon Logo
Water Resistant: 20Bar=200 meters
Weight: about 140g
Watch Dimension:
Case diameter: 38mm( without crown)
Lug length: 46mm (upper lug to lower lug)
Case thickness:  13mm (including mirror)
Lug width:20mm
Our service
Warranty: 2 years 
Returns policy: Please check the website“Return / Exchange / Warranty Policy” 
Style: automatic watch, dive watch, luxury watch 
Package: watch, box, warranty card, user manual
Service: Support retail, wholesale. OEM/ODM. Please contact the seller if necessary.