Watch Specification
Model: SD1904
Movement: Japan NH35 automatic, 41 hours of energy storage. 
Case material: 316L stainless steel
Case back: 316L stainless steel
Watch mirror: sapphire crystal with AR coating.
Water resistance: 200 m / 20 ATM
Luminous: Swiss C3, Green light / BGW9 Blue light
Crown: Screw-Down Onion Crown  
Case back: Screwback Case
Watch Dimension
Case diameter: 38mm(without crown)
Case length: 47.6mm(lug to lug)
Case thickness: 14.05mm 
Lug width: 20mm 
Our service
Warranty: 2 years 
Returns and Refund: 30 days return & refund service
Package: watch, warranty card, user manual, plastic protecting box
Style: men’s mechanical watch, men’s automatic watch, dive watch, luxury watch