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Smiths NATO PRS-40 AUTOMATICvsZelos Spearfish 3

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Smiths NATO PRS-40 AUTOMATIC

Smiths NATO PRS-40 AUTOMATIC owners praise its rugged, futuristic, and unique design, with some describing it as "badass" and others finding it an acquired taste with 70s or "Gattaca" influences. The watch is noted for its smooth-winding Seiko 6R15 movement and is considered "bombproof" for harsh environments, making it a suitable "beater/grab and go" option. While the purchase process can be difficult due to limited stock, one owner reported quick delivery. The 12 o'clock crown position is seen as unique and easy to use by rolling. On balance, owners appreciate the Smiths NATO PRS-40 AUTOMATIC for its distinctive, robust design and reliable movement at its price point.

Zelos Spearfish 3

The Zelos Spearfish 3 is widely praised for its exceptional finishing, with razor-sharp polish and flawless brushed transitions that owners feel exceed its price point. The 40mm case is noted for its wearability, and the La Joux-Perret G100 movement offers a 68-hour power reserve, with reported accuracy averaging +2.6 seconds per day. Reviewers highlight the exceptionally smooth bi-directional bezel and a tool-less micro-adjustment clasp described as best-in-class among microbrands. The sapphire sandwich construction and lumed bezel are also cited as desirable features. Overall, owners and reviewers rate the Zelos Spearfish 3 highly for its outstanding finishing and value at its price point.

From video reviewers

The La Joux Perret G100 movement is a significant strength. The bracelet's refinement is a weakness. Reviewers disagreed on the dial material, with one noting a burnt orange sunburst and another mentioning meteorite.

At a glance

11 of 29 specs differ
Diameter
NATO PRS-40 AUTOMATIC40.2mm
Spearfish 340mm
Power Reserve
NATO PRS-40 AUTOMATIC50h
Spearfish 3
Water Resistance
NATO PRS-40 AUTOMATIC100m
Spearfish 3200m
MSRP
NATO PRS-40 AUTOMATIC$315
Spearfish 3$749

Full specifications

Case

7 specs
Category
Diver
Diameter
40.2mm
40mm
Thickness
12.25mm
11.5mm
Lug-to-Lug
54.7mm
40mm
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
100m
200m

Crystal & Dial

1 specs
Dial Color
Black
Diver - Forged Carbon

Movement

2 specs
Caliber
Seiko 6R15
La Joux-Perret G100
Power Reserve
50h
0h

Pricing

1 specs
MSRP
$315
$749
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