The Wristwatch Field Guide

RZE Endeavour

The RZE Endeavour is a current-production diver watch with a grey grade 2 case, finished with ultrahex coating. It measures 39.6 mm across, 12.2 mm thick, 46.1 mm lug to lug, 105 g, and is water resistant to 200 m. Inside is the Seiko NH38A (no date) automatic movement, with ~41 h power reserve. Complications: Time only. Priced from $579 (from; config-dependent). Brand origin: Singapore.

Titanium and ceramic diver watchesTitaniumDiversUnder $5,000
Reference
–
Type
Diver
Price
$579 · from; config-dependent
Case diameter
39.6 mm
Thickness
12.2 mm
Lug-to-lug
46.1 mm
Water resistance
200 m
Weight
105 g (with bracelet)
Origin
Singapore
Movement
Automatic
Caliber
Seiko NH38A (no date)
Power reserve
~41 h
Complications
Time only
Material
Titanium
Grade / type
Grade 2
Colour
Grey
Hardness
–
Construction
–
Surface treatment
UltraHex coating
Caseback
Titanium
Nickel-free
Yes
Bracelet / strap
Titanium bracelet (UltraHex)
Matching bracelet
Standard
Crystal
Sapphire, inner AR
Display back
No
Dial
Various (Glacier, Polaris White and others)
Lume
Super-LumiNova (two-colour)
Availability
Offered
Status
Current
High confidence Verified Jul 2026 Source: Worn & Wound / RZE (maker, dimensions) Maker / listing ↗
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Frequently asked questions

Is the RZE Endeavour nickel-free?

Yes. Nothing nickel-bearing touches the skin: a grey grade 2 case with a titanium caseback, plus a non-steel crown and bracelet and clasp. The Wristwatch Field Guide marks it nickel-free for whole-watch skin contact. If your allergy is severe, confirm the contact points with the maker.

What is the case material of the RZE Endeavour?

The RZE Endeavour has a grey grade 2 case with a titanium caseback. This is confirmed against the maker spec.

What size is the RZE Endeavour?

It is 39.6 mm in diameter, 12.2 mm thick, 46.1 mm lug to lug, and water resistant to 200 m.

How much does the RZE Endeavour weigh?

About 105 g (w/ bracelet).

How much does the RZE Endeavour cost, and is it available?

It is current-production and lists from $579.

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