Side by side

Seiko Prospex SeavsLongines SPIRIT ZULU TIME

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

Prospex Sea
SeikoProspex Sea
MSRP $1,100
SPIRIT ZULU TIME
LonginesSPIRIT ZULU TIME
MSRP $3,550

At a glance

20 of 29 specs differ
Diameter
Prospex Sea41.3mm
SPIRIT ZULU TIME42mm
Power Reserve
Prospex Sea72h
SPIRIT ZULU TIME72h
Water Resistance
Prospex Sea300m
SPIRIT ZULU TIME100m
MSRP
Prospex Sea$1,100
SPIRIT ZULU TIME$3,550

Full specifications

Case

9 specs
Category
Diver
GMT
Diameter
41.3mm
42mm
Thickness
12.5mm
14.1mm
Lug-to-Lug
48.2mm
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
6R55
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
$1,100
$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

Seiko Prospex Sea models are widely praised for their excellent build quality, value for money, and comfortable wearability, with many appreciating the vintage-inspired designs and robust construction. Owners note the silicone straps are surprisingly comfortable and well-finished, and the Lumibrite lume is excellent. However, some find the 44.3mm size and thickness too large for smaller wrists, though others report the sizing as perfect. The 6R15 movement in some variants offers accuracy around +4 seconds per day with a 50-hour power reserve, while newer movements offer more. Some models are criticized for a bracelet width not matching the case size or a rudimentary clasp for their price point. Overall, owners and reviewers rate the Seiko Prospex Sea highly for its impressive case work and finishing at its price point.

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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