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 $475

At a glance

13 of 29 specs differ
Diameter
Cahill Automatic42mm
Diamond Collection27mm
Power Reserve
Cahill Automatic40h
Diamond Collection40h
Water Resistance
Cahill Automatic200m
Diamond Collection50m
MSRP
Cahill Automatic$350
Diamond Collection$475

Full specifications

Case

7 specs
Category
Diver
Dress
Diameter
42mm
27mm
Thickness
13.7mm
7.5mm
Lug-to-Lug
51mm
46mm
Lug Width
22mm
6mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
200m
50m

Crystal & Dial

3 specs
Crystal
Sapphire
Hardlex
Dial Color
Green
Black
Lume
None
LumiBrite on hands and index(es)

Movement

2 specs
Caliber
SII NH35A
V137
Type
Automatic
Quartz

Pricing

1 specs
MSRP
$350
$475

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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, which reviewers note is difficult to photograph accurately. The watch is frequently cited as offering excellent value for its fit and finish, with specific features like sapphire crystal and 100m water resistance contributing to its appeal. One owner reports great durability and accuracy, with a solar charging reserve, though notes that the gold plating on the bracelet shows some fading from desk work. Overall, owners rate the Seiko Diamond Collection highly for its dazzling aesthetics and perceived value.

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