A professional-grade Submariner Mod dive watch designed with classic tool-watch DNA. Featuring a 40mm solid stainless steel case, a 120-click unidirectional bezel, and your choice of robust Miyota 8215 ,seiko NH35 or smooth PT5000 automatic movement. Enhanced with a distinctive bubble-date sapphire crystal, a glide-lock clasp, and full luminous markings, the TD203M combines vintage aesthetics with modern performance and 200m water resistance.

Specifications

Movement & Functions
Movement Options:

• Miyota 8215 Automatic (21,600 vph, ~40h power reserve)

• Seiko TMI NH35 Automatic

• PT5000 Automatic (28,800 vph, ~40h power reserve)
  Functions: Hours, minutes, seconds, date

Case & Construction
Material: Solid 316L Stainless Steel
Diameter: 40mm
Thickness: 13.5mm
Bezel: 120-Click Unidirectional Rotating Bezel
Bezel Insert Size: 38.0mm x 30.6mm (compatible with aftermarket inserts)
Crystal: Sapphire with Magnified ("Bubble") Date Cyclops
Crown: Screw-down
Water Resistance: 20 ATM / 200 Meters

Dial & Visibility
Dial Size: 29mm
Date Window: At 3 o'clock with magnifier
Luminous: Super-LumiNova on hands and indices

Bracelet & Clasp
Bracelet: Solid Stainless Steel (Oyster-style)
Width: 20mm
Clasp: Glide Lock Adjustable Clasp (tool-free micro-adjustment)