Side by side

Seiko AstronvsTissot PRC 100 Solar

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

Astron
SeikoAstron
MSRP $2,200
PRC 100 Solar
TissotPRC 100 Solar
MSRP $575

At a glance

13 of 29 specs differ
Diameter
Astron41.2mm
PRC 100 Solar39mm
Power Reserve
Astron40h
PRC 100 Solar40h
Water Resistance
Astron100m
PRC 100 Solar100m
MSRP
Astron$2,200
PRC 100 Solar$575

Full specifications

Case

6 specs
Category
Dress
Sport
Diameter
41.2mm
39mm
Thickness
12mm
9.22mm
Lug-to-Lug
48.5mm
39mm
Lug Width
14mm
20mm
Material
Titanium
Stainless Steel

Crystal & Dial

4 specs
AR Coating
Super-clear coating
Inner
Dial Color
Black
Silver
Indices
Applied
Indexes
Lume
LumiBrite on hands and index(es)
Super-LumiNova ®

Movement

2 specs
Caliber
3X62
Jewels
10
25

Pricing

1 specs
MSRP
$2,200
$575

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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 time-telling technology, GPS time sync, and grab-and-go convenience, with many calling it the best watch they have ever owned. Reviewers and owners highlight the well-managed dial detail, textured hour markers, and high-contrast edges, as well as the well-finished case and bracelet. Some find the lightweight titanium build and quick bracelet adjustment contribute to comfortable wearability. Accuracy is noted as +/- 15 seconds per month without GPS, though the autonomous quartz movement can be easily reset by looking at the sky. Criticisms include DST not being automatically implemented, recessed buttons requiring a sharp object for adjustment, and sparse lume with no 12 o'clock marker. Some owners feel the price point is too expensive for its aesthetic appeal. Overall, owners rate the Seiko Astron highly for its advanced time-telling technology and convenient features.

Tissot PRC 100 Solar

Owners and reviewers highlight the Tissot PRC 100 Solar's value and modern, urban aesthetic, with its slim 9.2mm case and good finishing for the price. The solar movement is a key feature, offering a 14-month power reserve and rapid charging capabilities. Some owners find the dial colors a bit uninspired, and the date window placement is disliked, while the second hand's ticking is noted as a drawback compared to automatic movements. The watch's 39mm case is considered versatile, though some prefer a smaller 35-37mm size. Overall, owners and reviewers consider the Tissot PRC 100 Solar a versatile daily wear, particularly for its solar technology and Swiss-made appeal at its price point.

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