Watch Specification
Model: SD1907P
Movement model: Japan NH35 automatic movement
Case material: 316L stainless steel
Case back: 316L stainless steel
Watch mirror:  sapphire crystal with AR coating.
Water resistance: 200m / 20 ATM
Luminous: Swiss C3 green and BGW9 blue super luminous.
Crown: Screwdown Crown
Case back: Screwback Case
Watch Dimension
Case diameter:40mm ( without crown)
Case length: 46mm (lug to lug)
Case thickness: 13.35mm 
Lug width:20mm