Side by side

Gruppo Gamma Vanguard WeatheredvsSeiko Prospex Sea

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

Vanguard Weathered
Gruppo GammaVanguard Weathered
MSRP $790
Prospex Sea
SeikoProspex Sea
MSRP $900

At a glance

15 of 29 specs differ
Diameter
Vanguard Weathered42mm
Prospex Sea41mm
Power Reserve
Vanguard Weathered42h
Prospex Sea70h
Water Resistance
Vanguard Weathered100m
Prospex Sea200m
MSRP
Vanguard Weathered$790
Prospex Sea$900

Full specifications

Case

7 specs
Category
Diver
Diameter
42mm
41mm
Thickness
12.6mm
12.3mm
Lug-to-Lug
49.5mm
46.9mm
Lug Width
22mm
20mm
Finish
Weathered
Brushed and polished
Water Resistance
100m
200m

Crystal & Dial

4 specs
Crystal Shape
Flat
Curved
AR Coating
Yes
Anti-reflective coating on inner surface
Dial Color
Forged Carbon
Black
Lume
Super-LumiNova
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Miyota 9039
6R35
Power Reserve
42h
70h
Jewels
25
24

Pricing

1 specs
MSRP
$790
$900

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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.

Gruppo Gamma Vanguard Weathered

The satin-finished steel case is well-executed and aesthetically pleasing. The watch's lumières de nuit are not particularly bright, which might be a drawback for some users. Reviewers disagree on the watch's originality, with one reviewer finding it pleasing in-person and another describing it as decidedly derivative.

Seiko Prospex Sea

Owners widely praise the Seiko Prospex Sea for its excellent lume, robust build, and value, with many highlighting the comfortable 4 o'clock crown and reliable movements. Reviewers note impressive case finishing and attractive dials, with specific models lauded for their gradient blue designs and smooth bezel actions. Accuracy figures vary, with one owner reporting +9 seconds/day after demagnetization, while others find the watches to be good first "proper" watches. Some owners find the stock rubber straps uncomfortable or the overall size substantial on smaller wrists. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its combination of strong dive watch functionality and appealing design at its price point.

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