Watch Specification:
Model: SD1903
Movement: Japan NH35 automatic, 41 hours of energy storage. 
Case back: 316L stainless steel
Case material: 316L stainless steel
Watch mirror: sapphire crystal with AR coating.
Water resistance: 200 m / 20 ATM
Luminous: Swiss C3, Green light 
Crown: Screw-Down
Clasp: V2 6 hole adjustment milled clasp for engineer bracelet.
Watch Dimension:
Case diameter: 46.5mm(without crown)
Case length: 54.17mm
Case thickness: 14mm 
Lug width: 22mm 
Our Service:
Warranty: 3 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