Side by side

Bremont S500vsSeiko Astron GPS Solar 2026 Limited Edition

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.

Bremont S500

Owners widely praise the Bremont S500's excellent Super-LumiNova lume and refined finishing, with many finding its 43mm case comfortable and versatile on the wrist due to short lugs and an offset crown. Reviewers and owners alike note its handsome, rugged design and improved dial legibility for diving. However, some find the 16mm to 16.5mm thickness less practical for daily wear, and one reviewer flags legibility issues with the dark dial and hands. Concerns are raised by one source regarding the three-piece case construction's long-term water resistance for actual diving, while another criticizes the understated bezel markings and the second hand's visibility in low light. The COSC-certified ETA 2836-2 movement provides a 38-hour power reserve. On balance, owners and reviewers rate the Bremont S500 highly for its distinctive design and robust build quality, despite some reservations about its thickness and specific legibility elements.

Seiko Astron GPS Solar 2026 Limited Edition

The Seiko Astron GPS Solar 2026 Limited Edition is noted for its advanced GPS timekeeping that automatically updates time and date via satellite signals, powered by light to eliminate battery changes. Owners appreciate its design and texture, and the legible dial despite its complexity, with one owner preferring its less overloaded appearance over other Astron models. However, the GPS function requires a clear outdoor line-of-sight to the sky for reception, which can be an issue indoors or in dense urban environments, and DST is not implemented. The watch is priced over $2,000, and while it features a perpetual calendar, it only displays the date. Overall, owners and reviewers find the Seiko Astron GPS Solar 2026 Limited Edition a functional and appealing watch, particularly for its automatic timekeeping and solar power, though its GPS reception limitations and price point are noted considerations.

At a glance

14 of 29 specs differ
Diameter
S50043mm
Astron GPS Solar 2026 Limited Edition41.2mm
Power Reserve
S500
Astron GPS Solar 2026 Limited Edition
Water Resistance
S500500m
Astron GPS Solar 2026 Limited Edition100m
MSRP
S500$4,395
Astron GPS Solar 2026 Limited Edition$2,400

Full specifications

Case

7 specs
Category
Diver
GMT
Diameter
43mm
41.2mm
Thickness
12mm
Lug-to-Lug
48.6mm
Lug Width
14mm
Material
Stainless Steel
Titanium
Water Resistance
500m
100m

Crystal & Dial

3 specs
AR Coating
Super-clear coating
Dial Color
Orange
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
BE-92AE
3X62
Type
Automatic
Quartz
Jewels
0
10

Pricing

1 specs
MSRP
$4,395
$2,400
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