Side by side

Seiko Prospex SeavsZelos Spearfish 3

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

Prospex Sea
SeikoProspex Sea
MSRP $1,500
Spearfish 3
ZelosSpearfish 3
MSRP $749

At a glance

12 of 29 specs differ
Diameter
Prospex Sea43.5mm
Spearfish 340mm
Power Reserve
Prospex Sea70h
Spearfish 340h
Water Resistance
Prospex Sea200m
Spearfish 3200m
MSRP
Prospex Sea$1,500
Spearfish 3$749

Full specifications

Case

5 specs
Diameter
43.5mm
40mm
Thickness
13.3mm
11.5mm
Lug-to-Lug
51mm
40mm
Lug Width
22mm
20mm
Material
Titanium
316L Stainless Steel

Crystal & Dial

3 specs
AR Coating
Anti-reflective coating on inner surface
Inner
Dial Color
Black
Diver - Forged Carbon
Lume
LumiBrite on hands and index(es)
None

Movement

3 specs
Caliber
6R35
La Joux-Perret G100
Power Reserve
70h
40h
Jewels
24
25

Pricing

1 specs
MSRP
$1,500
$749

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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.

Seiko Prospex Sea

Seiko Prospex Sea owners and reviewers praise its Marinemaster-style aesthetic, excellent case finishing, and impressive LumiBrite lume. The watch is powered by the 6R15 movement with a 50-hour power reserve and comes with both a steel bracelet and a silicone strap. Some owners find the Seiko Prospex Sea to be a great value and a suitable first "proper" watch, while others report it is uncomfortably big, thick, and heavy on smaller wrists. Reviewers note the GMT function is secondary with a less prominent scale, and the bezel's quieter clicks may not appeal to all. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its classic design and finishing 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.

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