The Wristwatch Field Guide

Hamilton Khaki Navy BeLOWZERO Auto Titanium (black)

H78505330

The Hamilton Khaki Navy BeLOWZERO Auto Titanium (black) is a current-production diver watch with a grey titanium (grade undisclosed) case, finished with brushed; helium escape valve. It measures 46.0 mm across, 15.7 mm thick, 129 g, and is water resistant to 1000 m. Inside is the Hamilton H-10 automatic movement, with 80 h power reserve. Complications: Time only. Priced from $1,745 (approx). Brand origin: Switzerland.

Titanium and ceramic diver watchesTitaniumDiversUnder $5,000
Reference
H78505330
Type
Diver
Price
$1,745 · approx
Case diameter
46.0 mm
Thickness
15.7 mm
Lug-to-lug
Water resistance
1000 m
Weight
129 g (with strap)
Origin
Switzerland
Movement
Automatic
Caliber
Hamilton H-10
Power reserve
80 h
Complications
Time only
Material
Titanium
Grade / type
Titanium (grade undisclosed)
Colour
Grey
Hardness
Construction
Surface treatment
Brushed; helium escape valve
Caseback
Titanium
Nickel-free
No (steel contact)
Bracelet / strap
Rubber strap
Matching bracelet
Crystal
Sapphire
Display back
No
Dial
Black
Lume
Super-LumiNova
Availability
Offered
Status
Current
High confidence Verified Jun 2026 Source: Hamilton Maker / listing ↗
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Frequently asked questions

Is the Hamilton Khaki Navy BeLOWZERO Auto Titanium (black) nickel-free?

No. At least one part that touches the skin is nickel-bearing steel (commonly the caseback or clasp), so the guide does not mark it nickel-free.

What is the case material of the Hamilton Khaki Navy BeLOWZERO Auto Titanium (black)?

The Hamilton Khaki Navy BeLOWZERO Auto Titanium (black) has a grey titanium (grade undisclosed) case with a titanium caseback. This is confirmed against the maker spec.

What size is the Hamilton Khaki Navy BeLOWZERO Auto Titanium (black)?

It is 46.0 mm in diameter, 15.7 mm thick, and water resistant to 1000 m.

How much does the Hamilton Khaki Navy BeLOWZERO Auto Titanium (black) weigh?

About 129 g (w/ strap).

How much does the Hamilton Khaki Navy BeLOWZERO Auto Titanium (black) cost, and is it available?

It is current-production and lists from $1,745.

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