Side by side

Seiko AstronvsVaer D4 Meridian Solar

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

Astron
SeikoAstron
MSRP $2,700
D4 Meridian Solar
VaerD4 Meridian Solar
MSRP $399

At a glance

14 of 29 specs differ
Diameter
Astron43.3mm
D4 Meridian Solar42mm
Power Reserve
Astron40h
D4 Meridian Solar40h
Water Resistance
Astron100m
D4 Meridian Solar200m
MSRP
Astron$2,700
D4 Meridian Solar$399

Full specifications

Case

7 specs
Category
Chronograph
Diver
Diameter
43.3mm
42mm
Thickness
13.4mm
13.18mm
Lug-to-Lug
49.5mm
46mm
Lug Width
14mm
20mm
Material
Titanium
316L Stainless Steel
Water Resistance
100m
200m

Crystal & Dial

4 specs
Crystal
Sapphire
Domed Sapphire
Crystal Shape
Curved
Flat
AR Coating
Super-clear coating
Inner
Lume
LumiBrite on hands and index(es)
None

Movement

2 specs
Caliber
5X83
Jewels
14
25

Pricing

1 specs
MSRP
$2,700
$399

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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.

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.

Vaer D4 Meridian Solar

Owners widely praise the Vaer D4 Meridian Solar for its excellent value, citing features like the sapphire crystal with AR coating and its solar-powered quartz movement. The watch's great colorways, unique yet simple design, and gilt hands are frequently highlighted, contributing to its appeal as a sports or outdoors watch. However, the second-hand alignment is a common point of contention, with some owners finding it annoyingly imprecise for the $399 price point, a characteristic the brand states is within normal tolerances. The steel bracelet has also been described as disappointing with sharp edges, though alternative strap options can mitigate this. On balance, owners and reviewers rate the Vaer D4 Meridian Solar highly for its impressive feature set and design at its price point, despite minor criticisms regarding second-hand alignment and the stock bracelet.

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