Watch Specification
Model: SD1978
Movement: Japan NH35 automatic, 41 hours of energy storage. 
Case material: 316L stainless steel
Case back: 316L stainless steel
Bezel: 120 clicks unidirect rotational ceramic bezel
Watch mirror: sapphire crystal with AR coating.
Water resistance: 1000m Water Resistance
Luminous: Swiss C3 green and BGW9 blue super luminous.
Crown: Screwdown Crown
Case back:  Monoblock Case
Watch Dimension
Case diameter: 53.6mm ( without crown)
Case length:  53.6mm (lug to lug)
Case thickness: 17.85mm 
Lug width: 22mm 
Our service
Warranty: 3 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.