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NIMA Watches NIMA GMT (NH34)vsSeiko Prospex Sea 1968 Heritage Diver's GMT

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

NIMA GMT (NH34)
NIMA WatchesNIMA GMT (NH34)
MSRP $636
Prospex Sea 1968 Heritage Diver's GMT
SeikoProspex Sea 1968 Heritage Diver's GMT
MSRP $1,500
What people say

Owners + reviewers, side by side

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

NIMA Watches NIMA GMT (NH34)

Owners widely praise the NIMA Watches NIMA GMT (NH34) for its value, with some finding the fit and finish excellent and the adjustable clasp superior to others. The Seiko NH34 movement is noted for allowing the GMT hand to set without interrupting the seconds hand and for fitting into NH-compatible cases. One owner highlights the strong and long-lasting lume on the hands. However, some owners find the bezel too busy or chunky, and there is a desire for larger sizing options. The use of acrylic crystals on watches priced around $600 is criticized as not premium. Accuracy figures vary, with some owners questioning theirs while others find it great for the money. Overall, owners rate the NIMA Watches NIMA GMT (NH34) highly for its value and functional GMT hand, despite some aesthetic criticisms.

Seiko Prospex Sea 1968 Heritage Diver's GMT

The Seiko Prospex Sea 1968 Heritage Diver's GMT is widely praised for its build quality, finishing, and comfortable wearability, offering good value for its price point. Owners and reviewers highlight the attractive silver/white sunray dial, blue ceramic bezel, and the premium feel of the improved bracelet clasp with excellent micro-adjustment. The Caliber 6R54 movement provides a 72-hour power reserve, and real-world accuracy often exceeds its stated range of +25 to -15 seconds per day, with some owners reporting figures around +3 to +5 seconds per day. However, the caller-style GMT functionality is a point of contention for some, who find the GMT scale difficult to read and prefer a flyer GMT at this price. Some also find the crown position at 4 o'clock undesirable, and a few note a lack of dial contrast or illegibility of the inner bezel.

At a glance

13 of 29 specs differ
Diameter
NIMA GMT (NH34)39mm
Prospex Sea 1968 Heritage Diver's GMT42mm
Power Reserve
NIMA GMT (NH34)40h
Prospex Sea 1968 Heritage Diver's GMT72h
Water Resistance
NIMA GMT (NH34)200m
Prospex Sea 1968 Heritage Diver's GMT200m
MSRP
NIMA GMT (NH34)$636
Prospex Sea 1968 Heritage Diver's GMT$1,500

Full specifications

Case

6 specs
Category
Diver
Diameter
39mm
42mm
Thickness
12.8mm
12.9mm
Lug-to-Lug
46.2mm
48.6mm
Lug Width
20mm
20mm
Material
Stainless Steel (Black PVD)
Stainless Steel

Crystal & Dial

3 specs
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Anthracite Grey
Black
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Seiko NH34
6R54
Power Reserve
40h
72h
Jewels
25
24

Pricing

1 specs
MSRP
$636
$1,500
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