Side by side

Seiko Prospex Sea The Black SeriesvsGruppo Gamma Field III GMT Date

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

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 The Black Series

The Seiko Prospex Sea The Black Series is widely praised for its impressive value and compelling design elements. Reviewers highlight the SLA073's cave-diving-inspired dial, high-quality bracelet, and the robust 8L35 movement, calling it a standout release. The SRPE33 and SRPE39 models are noted for their attractive price, manta ray decorated dials, and excellent LumiBrite lume, though bezel alignment can be inconsistent. The SNJ029 is celebrated for its dynamic, colorful aesthetic, solar charging, and comfortable strap, making it ideal for outdoor adventures. Overall, the consensus is that Seiko Prospex Sea The Black Series models offer excellent value, with specific models lauded for their unique dials, quality finishing, and practical features like solar charging.

Gruppo Gamma Field III GMT Date

Owners widely praise the Gruppo Gamma Field III GMT Date for its awesome looks, quality, and good value. The watch features a 40mm brushed 316L stainless steel case, box sapphire crystal, and 200m water resistance, powered by a Seiko NH34A movement. Some reviewers note the NH34A movement's accuracy can range from -20~+40 seconds per day, though one reviewer reported +5 seconds per day with a regulated movement. The dial's dense layout with Arabic numerals can be overwhelming for some, and one owner found the size unsuitable for smaller wrists. On balance, owners rate the Gruppo Gamma Field III GMT Date highly for its impressive finishing and toolish design at its price point.

At a glance

11 of 29 specs differ
Diameter
Prospex Sea The Black Series45mm
Field III GMT Date40mm
Power Reserve
Prospex Sea The Black Series41h
Field III GMT Date41h
Water Resistance
Prospex Sea The Black Series200m
Field III GMT Date200m
MSRP
Prospex Sea The Black Series$765
Field III GMT Date$459

Full specifications

Case

4 specs
Category
Diver
GMT
Diameter
45mm
40mm
Thickness
13.2mm
14mm
Lug-to-Lug
47.7mm
48.5mm

Crystal & Dial

2 specs
AR Coating
Anti-reflective coating on inner surface
Yes
Lume
LumiBrite on hands, index(es) and bezel
Super-LumiNova

Movement

4 specs
Caliber
Seiko 4R36
Seiko Instruments NH38A
Power Reserve
41h
41h
Jewels
24
25
Complications
None
GMT, Date

Pricing

1 specs
MSRP
$765
$459
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