Side by side

Seiko Prospex Land Mechanical GMTvsZelos Comet 39

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

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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 Land Mechanical GMT

Owners widely praise the Seiko Prospex Land Mechanical GMT for its faithful reconstruction of a classic design, comfortable bracelet, and attractive gray dial with a bubbly crystal. Reviewers highlight its handsome everyday sports watch appeal, solid specifications, and classic Seiko diver aesthetics, offering great value. However, community members are divided on the 6R movement's accuracy, with some reporting significant deviations even after regulation, while others find it competitive for the price. A point of contention is the GMT function, with some wishing for a "flyer" style local jump GMT instead of the "caller" type, and the internal compass bezel is described as finicky and difficult to read. Owners generally consider the Seiko Prospex Land Mechanical GMT overpriced at its retail price, suggesting better value is found on sale or closer to $700.

Zelos Comet 39

Owners widely praise the Zelos Comet 39 for its wearable 39mm size, thin profile under 10mm thanks to its manual-wind Sellita SW215 movement, and its captivating dial with a deep starburst effect. The winding action is described as a joy, and the watch is considered a stunner for its price, blending modern and vintage aesthetics. Some owners note frustration with Zelos's limited production runs leading to quick sell-outs. One owner found the logo childlike, while another experienced strap-rubbing issues with the short lugs, which were resolved with a Milanese bracelet. Overall, owners and reviewers rate the Zelos Comet 39 highly for its excellent value and striking dial design.

At a glance

16 of 29 specs differ
Diameter
Prospex Land Mechanical GMT39.5mm
Comet 3939mm
Power Reserve
Prospex Land Mechanical GMT72h
Comet 39
Water Resistance
Prospex Land Mechanical GMT200m
Comet 3950m
MSRP
Prospex Land Mechanical GMT$1,150
Comet 39$2,499

Full specifications

Case

6 specs
Category
GMT
Dress
Diameter
39.5mm
39mm
Thickness
13.6mm
7.6mm
Lug-to-Lug
46.4mm
39mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
50m

Crystal & Dial

5 specs
Crystal
Sapphire
Domed Sapphire
Crystal Shape
Curved
AR Coating
Anti-reflective coating on inner surface
Dial Color
Tantalum LE
Lume
LumiBrite on hands and index(es)
None

Movement

4 specs
Caliber
Seiko 6R54
ETA/Peseux 7001
Type
Automatic
Manual
Power Reserve
72h
0h
Jewels
24
0

Pricing

1 specs
MSRP
$1,150
$2,499
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