The Titanium Field GuidePicks of the month

Isotope Old Radium Polar Enamel

The Isotope Old Radium Polar Enamel is a 40 mm bronze field watch with an automatic movement.

All Isotope watchesField watchesUnder $3,000MicrobrandUnder 11 mm thickDisplay back
Price
≈$1,585 (£1,200)
Material
Bronze
Grade / type
CuSn8 bronze
Water resistance
100 m
Type
Field
Case diameter
40.0 mm
Thickness
10.1 mm
Lug-to-lug
47 mm
Origin
United Kingdom
Movement
Automatic
Caliber
Swiss Landeron
Power reserve
40 hours
Complications
Date
Construction
Assembled
Finish technology
Natural finish
Caseback
Titanium
Nickel-free
Unconfirmed (bracelet, strap, or clasp hardware not confirmed)
Bracelet / strap
20mm quick-release suede Italian strap with brushed bronze buckle
Crystal
Anti-reflective sapphire
Display back
Yes
Dial
White enamel with Old Radium SuperLumiNova Arabic numerals and black date disc
Dial colours
Black White
Lume
Super-LumiNova (Old Radium)
Availability
Offered
Status
Current (limited edition of 300)
Not published
Reference, Weight, Colour, Hardness, Surface treatment, Matching bracelet
High confidence Verified Sep 2026 Source: Isotope Watches (maker) / Isotope (maker product page, re-verified)
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Frequently asked questions

What is the case of the Isotope Old Radium Polar Enamel made of?

The case is cusn8 bronze. That is confirmed against the maker's specification. The caseback is titanium.

What size is the Isotope Old Radium Polar Enamel?

The case is 40 mm across, 10.1 mm thick and 47 mm from lug to lug. It is water resistant to 100 m.

How much does the Isotope Old Radium Polar Enamel cost, and is it available?

It is in production, at a list price of $1,585.

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