The Titanium Field Guide

Zenith Defy Extreme Diver 42.5mm (titanium)

95.9600.3620.21.I300

The Zenith Defy Extreme Diver 42.5mm (titanium) is a current-production diver watch with a Titanium (grade undisclosed) case, finished with brushed titanium; ceramic bezel; helium valve. It measures 42.5 mm across, 15.5 mm thick, and is water resistant to 600 m. Inside is the Zenith El Primero 3620 SC automatic movement, with 60 h power reserve. Complications: Date. Brand origin: Switzerland.

Titanium diver watchesDisplay back
Reference95.9600.3620.21.I300
TypeDiver
Price– · maker page pending
Case diameter42.5 mm
Thickness15.5 mm
Lug-to-lug–
Water resistance600 m
Weight–
OriginSwitzerland
MovementAutomatic
CaliberZenith El Primero 3620 SC
Power reserve60 h
ComplicationsDate
TitaniumTitanium (grade undisclosed)
Surface treatmentBrushed titanium; ceramic bezel; helium valve
Nickel-freeYes
Bracelet / strapTitanium, rubber and fabric straps
CrystalSapphire
Display backYes
DialBlack starry sunray
LumeSuper-LumiNova
AvailabilityOffered
StatusCurrent; maker page pending verification
Medium confidence Verified 2026-06-22 Source: Zenith Maker / listing ↗
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