Seiko Seiko 5 Sports Field seriesvsWolbrook Douglas Grand Prix Racing
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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.
Seiko 5 Sports Field series
Douglas Grand Prix Racing
Diameter
39.4mm
40mm
Lug-to-Lug
47.9mm
n/a
Thickness
13.6mm
13mm
lowest
Water Resistance
100m
100m
Power Reserve
41h
n/a
MSRP
$450
$426
lowest
Movement
Seiko 4R34
Miyota 8315
Case
5 specsCrystal & Dial
4 specsMovement
3 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Seiko 5 Sports Field series is praised for its accessible explorer watch design and decent fit and finish for its price point. Reviewers note the inclusion of a caller GMT complication powered by the 4R34 automatic movement. On balance, owners and reviewers find the Seiko 5 Sports Field series a compelling option for its explorer aesthetic and GMT functionality at an accessible price.
The prominent five-sided GMT hand enhances legibility and adds a sophisticated aesthetic to the watch. The Seiko 5 Sports Field series offers similar functionality to the Explorer 2 at a lower price, making it a valuable option. Reviewers disagree on whether it's a missed opportunity for Seiko to release this model first, with one reviewer implying it would have been a more logical addition to their lineup.
The Wolbrook Douglas Grand Prix Racing features a Hesalite box crystal and a roulette date wheel. Owners note the Miyota 8315 movement does not hack, with one source stating a 42-hour power reserve and another a 60-hour power reserve, and accuracy tolerance is ±15 seconds per day. On balance, owners appreciate the Grand Prix Racing for its vintage aesthetic and accessible price point.
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