The Wristwatch Field Guide

Lum-Tec M54 Bronze

Archive · used only

The Lum-Tec M54 Bronze is a discontinued other watch with a cusn8 bronze case. It measures 44.0 mm across, 14.5 mm thick, 150 g, and is water resistant to 300 m. Inside is the Seiko NH35 japanese automatic movement, with 41 hours power reserve. Complications: Date. Priced from $790 (approx, discontinued). Brand origin: United States. No longer offered new; listed here as an archive reference for the used market.

Titanium, ceramic, and bronze other watchesBronzeUnder $5,000
Reference
Type
Other
Price
$790 · approx, discontinued
Case diameter
44.0 mm
Thickness
14.5 mm
Lug-to-lug
Water resistance
300 m
Weight
150 g (with strap)
Origin
United States
Movement
Japanese automatic
Caliber
Seiko NH35
Power reserve
41 hours
Complications
Date
Material
Bronze
Grade / type
CuSn8 bronze
Colour
Hardness
Construction
Assembled
Surface treatment
Caseback
Nickel-free
Not verified (contact-point materials not all confirmed)
Bracelet / strap
Leather and rubber straps
Matching bracelet
Crystal
Sapphire
Display back
No
Dial
Brown
Lume
MDV 8-layer lume
Availability
No longer offered
Status
Archive, limited to 200 pieces
Medium confidence Verified Jul 2026 Source: Princeton Watches / Blade HQ Maker / listing ↗
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Frequently asked questions

What is the case material of the Lum-Tec M54 Bronze?

The Lum-Tec M54 Bronze has a cusn8 bronze case. It is recorded at medium confidence pending a maker-stated material.

What size is the Lum-Tec M54 Bronze?

It is 44.0 mm in diameter, 14.5 mm thick, and water resistant to 300 m.

How much does the Lum-Tec M54 Bronze weigh?

About 150 g (w/ strap).

How much does the Lum-Tec M54 Bronze cost, and is it available?

It is no longer offered new; the guide keeps it as an archive reference for the used market, and it listed from $790 when current.

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