Side by side

Henry Archer TidslinjevsSeiko Astron

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

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Henry Archer Tidslinje

Owners widely praise the Henry Archer Tidslinje for its superb build quality, captivating dial designs, and comfortable wearability, with many highlighting its 40mm size and 12.1mm thickness as very wearable. The triple date function is appreciated for its utility and collection variety, and the beads of rice bracelet is frequently noted for its comfort and quality. Accuracy figures vary, with some owners reporting +/- 2-4 seconds per day and others around 10-15 seconds per day as advertised. Some owners find the day/month indicators and the numbering for days of the week to be tiny and hard to read, and the black bezel is considered disproportionately large and cosmetic by some. One owner noted disappointment that a micro-adjust clasp is no longer offered on the Lunaris model. Overall, owners rate the Henry Archer Tidslinje highly for its captivating design and excellent value for money.

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.

At a glance

16 of 29 specs differ
Diameter
Tidslinje40mm
Astron43.3mm
Power Reserve
Tidslinje
Astron
Water Resistance
Tidslinje200m
Astron100m
MSRP
Tidslinje$5,699
Astron$2,700

Full specifications

Case

7 specs
Category
Sport
Chronograph
Diameter
40mm
43.3mm
Thickness
12.1mm
13.4mm
Lug-to-Lug
47mm
49.5mm
Lug Width
20mm
14mm
Material
Stainless Steel (DLC coated)
Titanium
Water Resistance
200m
100m

Crystal & Dial

5 specs
Crystal
Domed Sapphire
Sapphire
Crystal Shape
Curved
AR Coating
Super-clear coating
Dial Color
Grey
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
Miyota 9122
5X83
Type
Automatic
Quartz
Jewels
0
14

Pricing

1 specs
MSRP
$5,699
$2,700
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