Model: SF791
Movement: Japan NH34 GMT movement
Case material: 316L stainless steel
Case back: 316L stainless steel
Watch mirror: bubble sapphire crystal with AR coating.
Water resistance: 200m / 20 ATM
Crown: Screwdown Crown
Case back: seethrough Case
Note: The GMT hand is blue, because it reflects when taking pictures, it looks like black.
Watch Dimension
Case diameter:40mm ( without crown)
Case length: 47mm (lug to lug)
Case thickness: 12.95mm 
Lug width: 19mm