Side by side

Phoibos Wave Master GMTvsSeiko Astron

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

Wave Master GMT
PhoibosWave Master GMT
MSRP $399
Astron
SeikoAstron
MSRP $2,500

At a glance

12 of 29 specs differ
Diameter
Wave Master GMT39.5mm
Astron42mm
Power Reserve
Wave Master GMT40h
Astron40h
Water Resistance
Wave Master GMT200m
Astron100m
MSRP
Wave Master GMT$399
Astron$2,500

Full specifications

Case

6 specs
Diameter
39.5mm
42mm
Thickness
12.7mm
12.4mm
Lug-to-Lug
46mm
49.5mm
Lug Width
20mm
14mm
Material
Stainless Steel
Titanium
Water Resistance
200m
100m

Crystal & Dial

2 specs
AR Coating
Yes
Super-clear coating
Lume
Super-LumiNova
LumiBrite on hands and index(es)

Movement

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

Pricing

1 specs
MSRP
$399
$2,500

Follow this matchup

Get a note when Phoibos Wave Master GMT vs Seiko Astron gets more votes, a community discussion, or a price drop. No account needed.

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Phoibos Wave Master GMT

The Phoibos Wave Master GMT is widely praised for its attractive design, comfortable 20mm tapering bracelet, and wearability on a 7" wrist, with owners finding it a strong value proposition at $220. Some minor finishing flaws, such as slightly crooked markers and off-center dial numbers, are noted by one owner, while accuracy averages around 5-10 seconds over two weeks. Overall, owners rate the Phoibos Wave Master GMT highly for its distinctive design and comfortable wearability at its price point.

From video reviewers

The Wave Master GMT's notable feature is its 200M water resistance. A drawback is the rattle of the bracelet. Reviewers disagree on the watch's value, with one reviewer noting its significant weight for a 39.5mm case diameter, but the other reviewer doesn't mention any specific weaknesses or trade-offs.

Seiko Astron

Owners widely praise the Seiko Astron for its spectacular technology, solar-powered quartz movement, and GPS time synchronization, making it a convenient grab-and-go option. The watch is frequently noted for its comfortable and lightweight titanium build, with some models featuring well-finished cases and robust ceramic bezels. Reviewers and owners alike highlight the dial's dynamic and shiny appearance, with textured hour markers and high-contrast edges. Accuracy is generally considered good, with figures ranging from +/- 15 seconds per month to within 1/2 second per day, easily corrected by GPS signal. However, some owners note that DST requires manual adjustment and that automatic time syncing depends on proximity to radio wave towers. The price point is a concern for some, who feel it competes with luxury watches without the same aesthetic appeal. One owner pointed out minimal lume and a slight misalignment of the minute hand on their model.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.