Watch Specification
Model: SD1970S
Movement: Japan NH35 automatic, 41 hours of energy storage. 
Case material: Germany Cusn8 bronze
Case back: 316L stainless steel 
Bezel: 120 click unidirect rotational ceramic bezel
          120 click unidirect rotational bronze bezel
Watch mirror: sapphire crystal with AR coating.
Water resistance: 200 m / 20 ATM
dial: V1 version: bronze edge applied indices
        V2: stainless steel edge applied indices
Luminous: Lates batch is Swiss BGW9 blue super luminousfor bezel and C3 green lume is Dial
Crown: Screwdown Crown
Case back: Screwback Case
Watch Dimension
Case diameter: 43.8mm ( without crown)
Case length: 46.8mm (lug to lug)
Case thickness: 13.5mm 
Lug width: 20mm 
Our service
Warranty: 2 years 
Returns policy: 30-day return and refund,
Style: automatic watch, dive watch, luxury watch 
Package: watch, box, warranty card, user manual