Side by side

Seiko AstronvsTissot PR516

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

Astron
SeikoAstron
MSRP $2,700
PR516
TissotPR516
MSRP $575

At a glance

13 of 29 specs differ
Diameter
Astron43.3mm
PR51640mm
Power Reserve
Astron40h
PR51640h
Water Resistance
Astron100m
PR516100m
MSRP
Astron$2,700
PR516$575

Full specifications

Case

5 specs
Diameter
43.3mm
40mm
Thickness
13.4mm
12.16mm
Lug-to-Lug
49.5mm
40mm
Lug Width
14mm
20mm
Material
Titanium
Stainless Steel

Crystal & Dial

5 specs
Crystal Shape
Curved
Flat
AR Coating
Super-clear coating
Yes
Dial Color
Black
White
Indices
Applied
Indexes
Lume
LumiBrite on hands and index(es)
Super-LumiNova ®

Movement

2 specs
Caliber
5X83
Jewels
14
25

Pricing

1 specs
MSRP
$2,700
$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

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.

Tissot PR516

Owners and reviewers widely praise the Tissot PR516 for its athletic 1970s charisma, vintage-inspired dial design, and thoughtful finishing. The manual-wind chronograph variant is noted for its robust case and impressive A05.291 movement with a 68-hour power reserve, while the automatic Powermatic 80 variant offers an 80-hour power reserve in a 38mm steel case at an accessible price. However, several sources flag the bracelet clasp as a letdown, describing it as a folded steel or stamped design that does not match the case quality. Some owners find the dial bland or wish the bezel looked different, and one reviewer notes the 14mm thickness of the chronograph can be noticeable. The Powermatic 80 variant's fixed bezel is criticized by one owner as a departure from dive watch principles. On balance, owners and reviewers rate the Tissot PR516 highly for its strong value and retro-inspired design, with the chronograph movement and accessible pricing being key draws.

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