Inspired by the earliest Zenith aviation instruments, SD1903S in a 46.5mm bronze case features a matte black dial with oversized luminescent Arabic numerals.
Movement: Japan NH35 automatic, 41 hours of energy storage.
Case back: 316L stainless steel
Case material: CUSN8 Bronze
Watch mirror: sapphire crystal with AR coating.
Water resistance: 200 m / 20 ATM
Luminous: Swiss C3, Green light
Case diameter: 46.5mm(without crown)
Case length: 54.17mm
Case thickness: 14mm
Lug width: 22mm
Exhaust valve: have
Delivery: DHL Express
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