Side by side

Spinnaker Cahill AutomaticvsWolbrook Douglas Grand Prix Racing

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

Cahill Automatic
SpinnakerCahill Automatic
MSRP $350
Douglas Grand Prix Racing
WolbrookDouglas Grand Prix Racing
MSRP $442

At a glance

9 of 29 specs differ
Diameter
Cahill Automatic42mm
Douglas Grand Prix Racing40mm
Power Reserve
Cahill Automatic40h
Douglas Grand Prix Racing40h
Water Resistance
Cahill Automatic200m
Douglas Grand Prix Racing100m
MSRP
Cahill Automatic$350
Douglas Grand Prix Racing$442

Full specifications

Case

6 specs
Category
Diver
Racing
Diameter
42mm
40mm
Thickness
13.7mm
13mm
Lug-to-Lug
51mm
Lug Width
22mm
20mm
Water Resistance
200m
100m

Crystal & Dial

1 specs
Dial Color
Green
Steel

Movement

1 specs
Caliber
SII NH35A
Miyota 8315

Pricing

1 specs
MSRP
$350
$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.

Spinnaker Cahill Automatic

Owners widely praise the Spinnaker Cahill Automatic for its attractive vintage-inspired design, comfortable wearability on smaller wrists, and good timekeeping, with one owner specifically noting the large "maxi" indices and NATO strap as highlights. However, some find the lume application uneven and note the use of a mineral crystal. A significant concern raised by one owner is a report of internal component failures and a perceived lack of quality control within the brand. On balance, the Spinnaker Cahill Automatic is well-regarded by owners for its style and value, particularly at specific price points, despite some noted manufacturing inconsistencies.

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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