Side by side

Glycine Combat Sub VintagevsSeiko Prospex Sea 1968 Heritage Diver's GMT

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.

Glycine Combat Sub Vintage

Owners widely praise the Glycine Combat Sub Vintage for its excellent proportions and slim profile. One owner notes the lume pip on the chapter ring is slightly off-color. The power reserve is reported as inconsistent. Overall, owners rate the Glycine Combat Sub Vintage highly for its value and slim wearability.

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

16 of 29 specs differ
Diameter
Combat Sub Vintage42mm
Prospex Sea 1968 Heritage Diver's GMT42mm
Power Reserve
Combat Sub Vintage38h
Prospex Sea 1968 Heritage Diver's GMT72h
Water Resistance
Combat Sub Vintage200m
Prospex Sea 1968 Heritage Diver's GMT200m
MSRP
Combat Sub Vintage$1,750
Prospex Sea 1968 Heritage Diver's GMT$1,500

Full specifications

Case

5 specs
Thickness
12.5mm
12.9mm
Lug-to-Lug
48.6mm
Lug Width
22mm
20mm
Finish
Caseback

Crystal & Dial

5 specs
Crystal Shape
AR Coating
Anti-reflective coating on inner surface
Dial Color
Black
Indices
Lume
Luminous
LumiBrite on hands, index(es) and bezel

Movement

5 specs
Caliber
Sellita SW200-1
6R54
Beat Rate
28,800 vph
0 vph
Power Reserve
38h
72h
Jewels
25
24
Complications
Date
None

Pricing

1 specs
MSRP
$1,750
$1,500
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