Side by side

Citizen Zenshin SenkeivsSeiko 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.

Citizen Zenshin Senkei

The Citizen Zenshin Senkei is praised for its appealing color options and accessible price point, featuring a titanium case and a grid-patterned dial. Its Eco-Drive B620 movement provides accuracy of ±15 seconds per month. On balance, owners and reviewers highlight the Citizen Zenshin Senkei's value proposition and distinctive design elements.

Seiko Astron

Owners widely praise the Seiko Astron for its spectacular technology, self-sufficiency, and grab-and-go convenience, with one owner calling it the best watch they have ever had. Reviewers and owners highlight the detailed and well-managed dials, often with "Grand Seiko-esque" precision, and appreciate the comfortable, lightweight titanium construction. The solar-powered quartz movement with GPS time sync is a significant draw, offering accurate timekeeping. However, the price point of around €2250-€2400 is frequently cited as high for a quartz watch. Some owners note manual DST implementation, dependence on outdoor conditions or radio tower proximity for GPS sync, and sparse lume. One owner experienced the minute hand sitting slightly off and found the recessed buttons difficult to operate. Accuracy figures vary, with some reporting +/- 15 seconds per month without GPS, while others note autonomous quartz movement accuracy of up to 1/2 second per day.

At a glance

13 of 29 specs differ
Diameter
Zenshin Senkei41mm
Astron44.1mm
Power Reserve
Zenshin Senkei
Astron
Water Resistance
Zenshin Senkei100m
Astron100m
MSRP
Zenshin Senkei$506
Astron$3,100

Full specifications

Case

5 specs
Diameter
41mm
44.1mm
Thickness
0mm
14.4mm
Lug-to-Lug
0mm
50mm
Lug Width
0mm
14mm
Material
Super Titanium
Titanium

Crystal & Dial

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

Movement

3 specs
Caliber
B620
5X83
Type
Solar
Quartz
Jewels
0
14

Pricing

1 specs
MSRP
$506
$3,100
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