Watch Specification
Model: SD1975S V2
Movement: Japan NH35 automatic, 41 hours of energy storage. 
Case material: 316L stainless steel 
Case back: 316L stainless steel
Bezel: 120 click unidirect rotational bronze bezel.
Bezel insert: bronze ( non-luminous) or ceramic bezel insert( BGW9 luminous)
Watch mirror: sapphire crystal with AR coating.
Water resistance: 300m / 30 ATM
Luminous: bronze bezel version: Swiss C3 green lume for dial and hands. Cermaic bezel version: BGW9 luminous for beze insert and Swiss C3 green lume for dial and hands.
Crown: Screwdown Crown
Case back: Screwback Case
Watch Dimension
Case diameter: 47.5mm ( without crown)
Case length: 44mm (lug to lug)
Case thickness: 15mm 
Lug width: 22mm 
Our service
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.