Side by side

Spinnaker Cahill AutomaticvsSeiko Diamond Collection

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

Cahill Automatic
SpinnakerCahill Automatic
MSRP $350
Diamond Collection
SeikoDiamond Collection
MSRP $525

At a glance

10 of 29 specs differ
Diameter
Cahill Automatic42mm
Diamond Collection32mm
Power Reserve
Cahill Automatic40h
Diamond Collection40h
Water Resistance
Cahill Automatic200m
Diamond Collection100m
MSRP
Cahill Automatic$350
Diamond Collection$525

Full specifications

Case

7 specs
Category
Diver
Dress
Diameter
42mm
32mm
Thickness
13.7mm
8.2mm
Lug-to-Lug
51mm
39mm
Lug Width
22mm
15mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
200m
100m

Crystal & Dial

1 specs
Dial Color
Green
Black

Movement

1 specs
Caliber
SII NH35A
6N32

Pricing

1 specs
MSRP
$350
$525

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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.

Seiko Diamond Collection

Owners widely praise the Seiko Diamond Collection for its stunning beauty, particularly highlighting the 14 diamonds and the captivating mother-of-pearl dial. Its 33.2mm case size, 100m water resistance, sapphire crystal, and lightweight build are appreciated features contributing to comfortable wear. Some owners find the dial detail is best appreciated in direct sunlight. The gold plating on some models may show fading from desk work over time. Overall, owners rate the Seiko Diamond Collection highly for its dazzling aesthetics and comfortable, well-finished design at its price point.

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