Side by side

Spinnaker Tesei Bronze SwissvsSeiko Astron

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

Tesei Bronze Swiss
SpinnakerTesei Bronze Swiss
MSRP $850
Astron
SeikoAstron
MSRP $2,700

At a glance

15 of 29 specs differ
Diameter
Tesei Bronze Swiss43mm
Astron43.3mm
Power Reserve
Tesei Bronze Swiss40h
Astron40h
Water Resistance
Tesei Bronze Swiss300m
Astron100m
MSRP
Tesei Bronze Swiss$850
Astron$2,700

Full specifications

Case

7 specs
Category
Diver
Chronograph
Diameter
43mm
43.3mm
Thickness
16mm
13.4mm
Lug-to-Lug
52mm
49.5mm
Lug Width
22mm
14mm
Material
Bronze
Titanium
Water Resistance
300m
100m

Crystal & Dial

4 specs
Crystal Shape
Flat
Curved
AR Coating
Inner
Super-clear coating
Dial Color
Green
Black
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
Sellita SW200-1
5X83
Type
Automatic
Quartz
Jewels
25
14

Pricing

1 specs
MSRP
$850
$2,700

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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 Tesei Bronze Swiss

Owners praise the Spinnaker Tesei Bronze Swiss for its incredible macro-level detail and sharp design, noting its bronze case, ceramic bezel, and wave dial. The inclusion of a Sellita SW200 Swiss movement is highlighted. One owner expressed a desire for a smaller 39-40mm variant, stating it would be their ultimate bronze diver if such a size were offered. On balance, owners rate the Spinnaker Tesei Bronze Swiss highly for its detailed finishing and bronze diver aesthetic.

Seiko Astron

The Seiko Astron is widely praised for its advanced timekeeping technology, including GPS and radio wave synchronization, offering grab-and-go convenience and exceptional accuracy, with some users reporting +/- 15 seconds per month or even 1/2 second per day for its autonomous quartz movement. Owners appreciate its well-finished titanium cases and bracelets, detailed dials with high-contrast markers, and lightweight, comfortable wearability. However, some find the price point of around $2,000 to $2,400 expensive, noting that GPS sync works best outdoors and that certain models lack screw-down casebacks, impacting water resistance. The lume is described as sparse on some models, and recessed buttons require tools to operate. Overall, owners and reviewers rate the Seiko Astron highly for its cutting-edge technology and comfortable, well-finished design, with the value proposition becoming more compelling when models are found at a discount.

From video reviewers

The watch's automatic time zone adjustment via GPS is a notable feature. The watch's solar-powered charging system can take up to 6 months to fully charge, which may not be ideal for users who need a quick power boost.

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