Side by side

Seiko AstronvsLongines CONQUEST

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

Astron
SeikoAstron
MSRP $2,700
CONQUEST
LonginesCONQUEST
MSRP $900

At a glance

21 of 29 specs differ
Diameter
Astron43.3mm
CONQUEST41mm
Power Reserve
Astron40h
CONQUEST40h
Water Resistance
Astron100m
CONQUEST300m
MSRP
Astron$2,700
CONQUEST$900

Full specifications

Case

9 specs
Category
Chronograph
Diver
Diameter
43.3mm
41mm
Thickness
13.4mm
11.8mm
Lug-to-Lug
49.5mm
51mm
Lug Width
14mm
21mm
Material
Titanium
Stainless Steel
Finish
Brushed and polished
Water Resistance
100m
300m
Caseback
Solid
Screw-down case back

Crystal & Dial

5 specs
Crystal Shape
Curved
AR Coating
Super-clear coating
Underside
Dial Color
Black
Blue
Indices
Applied
Applied Arabic numerals and indexes
Lume
LumiBrite on hands and index(es)
Super-LumiNova

Movement

6 specs
Caliber
5X83
L157.3
Beat Rate
28,800 vph
25,200 vph
Jewels
14
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
Hours, minutes, seconds and date

Pricing

1 specs
MSRP
$2,700
$900

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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.

Longines CONQUEST

Owners widely praise the Longines CONQUEST for its excellent finishing, comfortable wearability, and strong value, with many highlighting its versatility and smooth hand-winding action. Specific points of praise include the clean design, 30 ATM water resistance, and curved lugs contributing to comfort. However, reviewers and owners consistently note the bracelet's lack of micro-adjustment and the lume is considered poor by multiple sources. Some find the design too simple, and one owner felt the watch was underwhelming in person. On balance, owners rate the Longines CONQUEST highly for its exceptional finishing and value at its price point.

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