Side by side

Seiko AstronvsZelos Blacktip 200m GMT

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

Astron
SeikoAstron
MSRP $3,100
Blacktip 200m GMT
ZelosBlacktip 200m GMT
MSRP $499

At a glance

16 of 29 specs differ
Diameter
Astron44.1mm
Blacktip 200m GMT41mm
Power Reserve
Astron40h
Blacktip 200m GMT40h
Water Resistance
Astron100m
Blacktip 200m GMT200m
MSRP
Astron$3,100
Blacktip 200m GMT$499

Full specifications

Case

7 specs
Category
Chronograph
GMT
Diameter
44.1mm
41mm
Thickness
14.4mm
13mm
Lug-to-Lug
50mm
41mm
Lug Width
14mm
20mm
Material
Titanium
316L Stainless Steel
Water Resistance
100m
200m

Crystal & Dial

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

Movement

3 specs
Caliber
5X83
Seiko NH34 GMT
Type
Quartz
Automatic
Jewels
14
25

Pricing

1 specs
MSRP
$3,100
$499

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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

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.

Zelos Blacktip 200m GMT

Owners widely praise the Zelos Blacktip 200m GMT's solid bracelet construction and excellent bezel action. The watch has sold out quickly, indicating strong demand. Overall, owners rate the Zelos Blacktip 200m GMT highly for its robust build and desirable availability.

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