Side by side

Spinnaker Croft 39 GMTvsSeiko Prospex SPEEDTIMER

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

Croft 39 GMT
SpinnakerCroft 39 GMT
MSRP $445
Prospex SPEEDTIMER
SeikoProspex SPEEDTIMER
MSRP $725

At a glance

11 of 29 specs differ
Diameter
Croft 39 GMT39mm
Prospex SPEEDTIMER39mm
Power Reserve
Croft 39 GMT40h
Prospex SPEEDTIMER40h
Water Resistance
Croft 39 GMT100m
Prospex SPEEDTIMER100m
MSRP
Croft 39 GMT$445
Prospex SPEEDTIMER$725

Full specifications

Case

4 specs
Category
GMT
Chronograph
Thickness
13mm
13.3mm
Lug-to-Lug
47mm
45.5mm
Material
316L Stainless Steel
Stainless Steel

Crystal & Dial

4 specs
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Red
Black
Lume
None
LumiBrite on hands and index(es)

Movement

2 specs
Caliber
Seiko NH34A
V192
Type
Automatic
Quartz

Pricing

1 specs
MSRP
$445
$725

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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.

Spinnaker Croft 39 GMT

Owners praise the Spinnaker Croft 39 GMT for its colorful design, NH34 GMT movement, and reasonable price, noting high-standard manufacturing on the case, bezel, and bracelet. One owner finds the 43mm case and 51mm lug-to-lug dimensions too large for the design, preferring a 39-40mm case size. A potential issue with the lume was noted by one user. On balance, owners value the Spinnaker Croft 39 GMT for its attractive design and build quality at its price point, though sizing is a point of contention for some.

Seiko Prospex SPEEDTIMER

Owners widely praise the Seiko Prospex SPEEDTIMER's gorgeous, unique red dial and vintage-inspired design, finding it a sturdy and reliable everyday watch. Some owners, however, question the value proposition at around $700 for a solar quartz model, citing its 13-15mm thickness and the 24-hour subdial as drawbacks. Accuracy figures vary, with one owner reporting +1/+2 seconds per day, while another notes the V192 solar movement offers a six-month power reserve. Overall, owners and reviewers find the Seiko Prospex SPEEDTIMER a capable and versatile chronograph, with its striking dial and everyday wearability being the most frequently cited strengths.

From video reviewers

The Seiko Prospex SPEEDTIMER's solar movement provides reliable power without battery replacements and accurate timekeeping, with a claimed accuracy of ±15 seconds per month. A notable trade-off is the watch's slightly thicker profile and somewhat lacking lume brightness. Reviewers disagree on whether the bezel action is smooth and clicky, with one reviewer praising it and the other not mentioning it.

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