Side by side

Lum-Tec Solar MarinevsWolbrook Douglas Grand Prix Racing

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

Solar Marine
Lum-TecSolar Marine
MSRP $463
Douglas Grand Prix Racing
WolbrookDouglas Grand Prix Racing
MSRP $442

At a glance

8 of 29 specs differ
Diameter
Solar Marine39mm
Douglas Grand Prix Racing40mm
Power Reserve
Solar Marine40h
Douglas Grand Prix Racing40h
Water Resistance
Solar Marine300m
Douglas Grand Prix Racing100m
MSRP
Solar Marine$463
Douglas Grand Prix Racing$442

Full specifications

Case

6 specs
Category
Diver
Racing
Diameter
39mm
40mm
Thickness
10.7mm
13mm
Lug-to-Lug
43.5mm
Material
316L Stainless Steel (DLC coated)
316L Stainless Steel
Water Resistance
300m
100m

Movement

1 specs
Caliber
Miyota 8315

Pricing

1 specs
MSRP
$463
$442

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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.

Lum-Tec Solar Marine

Lum-Tec Solar Marine owners praise its all-black diver design, excellent lume, and rugged, tank-like build. One owner finds it a perfect fit for a 7-inch wrist and the most frequently worn watch despite its smaller size. However, one owner cautions that the PVD coating will wear and chip within a year, impacting its appearance, and another finds the price high for a solar quartz watch with added lume. On balance, owners rate the Lum-Tec Solar Marine highly for its robust design and excellent lume, despite concerns about PVD durability and value proposition.

Wolbrook Douglas Grand Prix Racing

The Wolbrook Douglas Grand Prix Racing features a Hesalite box crystal, a roulette date wheel, and a 40mm steel case. Owners note it is powered by a Miyota 8315 movement with a 60-hour power reserve, regulated to within ±15 seconds per day. One owner points out that an earlier iteration of the movement did not hack and had a 42-hour power reserve. On balance, owners appreciate the Hesalite crystal and roulette date wheel at its $275 price point.

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