Side by side

Seiko Astron GPS Solar 2025 Limited EditionvsVario 1918 Medic Brass

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

Astron GPS Solar 2025 Limited Edition
SeikoAstron GPS Solar 2025 Limited Edition
MSRP $2,900
1918 Medic Brass
Vario1918 Medic Brass
MSRP $388

At a glance

15 of 29 specs differ
Diameter
Astron GPS Solar 2025 Limited Edition43.4mm
1918 Medic Brass40mm
Power Reserve
Astron GPS Solar 2025 Limited Edition40h
1918 Medic Brass40h
Water Resistance
Astron GPS Solar 2025 Limited Edition100m
1918 Medic Brass100m
MSRP
Astron GPS Solar 2025 Limited Edition$2,900
1918 Medic Brass$388

Full specifications

Case

6 specs
Category
Chronograph
Field
Diameter
43.4mm
40mm
Thickness
13.4mm
10mm
Lug-to-Lug
49.5mm
48mm
Lug Width
14mm
20mm
Material
Titanium
316L Stainless Steel

Crystal & Dial

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

Movement

3 specs
Caliber
5X83
Seiko NH38A
Type
Quartz
Automatic
Jewels
14
25

Pricing

1 specs
MSRP
$2,900
$388

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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 GPS Solar 2025 Limited Edition

The Seiko Astron GPS Solar 2025 Limited Edition is lauded for its advanced satellite timekeeping and perpetual calendar functionality, offering global time and location updates via GPS signals. Owners appreciate its well-built titanium or steel case, often featuring a ceramic bezel, and the unique asymmetrical design inspired by the 1983 Seiko 7A28 6000. However, its substantial 47mm size and 16.5mm thickness are frequently noted as drawbacks, with some finding it wears large and is difficult to fit under shirt sleeves. The perpetual calendar is limited to displaying only the date, and GPS signal reception requires a clear view of the sky, posing challenges indoors. The watch is priced around $2,900 and is limited to 3,000 pieces. Overall, owners and reviewers value the Seiko Astron GPS Solar 2025 Limited Edition for its cutting-edge technology and distinctive design, despite its considerable dimensions.

Vario 1918 Medic Brass

Owners widely praise the Vario 1918 Medic Brass for its crisp enamel dial, easy-to-read numerals, and cathedral hands, noting the brass case develops an attractive patina over time. However, the soft brass scratches easily, and one owner found the lume to be poor. Accuracy varies, with one example running slow by about 10 seconds per day and another owner deeming the Miyota 82s5 movement just okay. On balance, owners rate the Vario 1918 Medic Brass highly for its unique dial and the evolving character of its brass case.

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