Side by side

Seiko Prospex Sea 1968 Heritage Diver's GMT WatchvsLongines SPIRIT ZULU TIME

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

SPIRIT ZULU TIME
LonginesSPIRIT ZULU TIME
MSRP $3,550

At a glance

19 of 29 specs differ
Diameter
Prospex Sea 1968 Heritage Diver's GMT Watch42mm
SPIRIT ZULU TIME42mm
Power Reserve
Prospex Sea 1968 Heritage Diver's GMT Watch72h
SPIRIT ZULU TIME72h
Water Resistance
Prospex Sea 1968 Heritage Diver's GMT Watch300m
SPIRIT ZULU TIME100m
MSRP
Prospex Sea 1968 Heritage Diver's GMT Watch$1,700
SPIRIT ZULU TIME$3,550

Full specifications

Case

8 specs
Category
Diver
GMT
Thickness
13.3mm
14.1mm
Lug-to-Lug
48.6mm
49.4mm
Lug Width
20mm
22mm
Material
Stainless Steel
Ceramic
Finish
Brushed and polished
Water Resistance
300m
100m
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Anti-reflective coating on inner surface
Both sides
Indices
Applied
Applied Arabic numerals
Lume
LumiBrite on hands, index(es) and bezel
Super-LumiNova

Movement

6 specs
Caliber
6R54
L844.4
Beat Rate
28,800 vph
25,200 vph
Jewels
24
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
Hours, minutes, seconds and date, 24 hours hand with time zone mechanism

Pricing

1 specs
MSRP
$1,700
$3,550

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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 1968 Heritage Diver's GMT Watch

The Seiko Prospex Sea 1968 Heritage Diver's GMT Watch offers a 300-meter depth rating and a caller-style GMT complication powered by the Caliber 6R54 movement, which provides a 72-hour power reserve. Reviewers note its refined clasp with extensive micro-adjustment. However, the movement's accuracy, ranging from +25 to -15 seconds per day, is considered a drawback by some. Overall, reviewers highlight the Seiko Prospex Sea 1968 Heritage Diver's GMT Watch as a good reminder of Seiko's value, despite the wide accuracy range of its movement.

Longines SPIRIT ZULU TIME

Owners widely praise the Longines SPIRIT ZULU TIME for its refined finishing, attractive dial with gilt elements, and smooth winding action. Reviewers highlight its handsome and versatile design, with some noting the 39mm variant offers comfortable wearability. The L844.4 movement provides a 72-hour power reserve and COSC certification. Some owners find the bracelet lacks sufficient micro-adjustment and prefer a weightier feel, while others note the 41mm or 42mm case sizes may be large for smaller wrists. On balance, owners and reviewers rate the Longines SPIRIT ZULU TIME highly for its excellent finishing and appealing design at its price point.

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