Side by side

Tornek-Rayville CISO M38 FieldvsSeiko Prospex Land Mechanical GMT

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

CISO M38 Field
Tornek-RayvilleCISO M38 Field
MSRP $695
Prospex Land Mechanical GMT
SeikoProspex Land Mechanical GMT
MSRP $1,150

At a glance

12 of 29 specs differ
Diameter
CISO M38 Field38mm
Prospex Land Mechanical GMT39.5mm
Power Reserve
CISO M38 Field42h
Prospex Land Mechanical GMT72h
Water Resistance
CISO M38 Field100m
Prospex Land Mechanical GMT200m
MSRP
CISO M38 Field$695
Prospex Land Mechanical GMT$1,150

Full specifications

Case

5 specs
Category
GMT
Diameter
38mm
39.5mm
Thickness
12.45mm
13.6mm
Lug-to-Lug
43.6mm
46.4mm
Water Resistance
100m
200m

Crystal & Dial

3 specs
Crystal Shape
Flat
Curved
AR Coating
Yes
Anti-reflective coating on inner surface
Lume
Superluminova
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
TMI NH36
6R54
Power Reserve
42h
72h
Jewels
25
24

Pricing

1 specs
MSRP
$695
$1,150

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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.

Tornek-Rayville CISO M38 Field

Owners widely report the Tornek-Rayville CISO M38 Field offers high overall quality with a comfortable bracelet featuring single-sided screw links. The watch exhibits minimal wear, with only hairline scratches and a faint, difficult-to-photograph bezel mark. On balance, owners value the Tornek-Rayville CISO M38 Field for its robust build and comfortable wearability.

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.

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