Side by side

Phoibos Wave Master GMTvsGrand Seiko SLGA015

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

Wave Master GMT
PhoibosWave Master GMT
MSRP $399
SLGA015
Grand SeikoSLGA015
MSRP $12,600

At a glance

11 of 29 specs differ
Diameter
Wave Master GMT39.5mm
SLGA01543.8mm
Power Reserve
Wave Master GMT40h
SLGA015120h
Water Resistance
Wave Master GMT200m
SLGA015200m
MSRP
Wave Master GMT$399
SLGA015$12,600

Full specifications

Case

6 specs
Category
GMT
Diver
Diameter
39.5mm
43.8mm
Thickness
12.7mm
13.8mm
Lug-to-Lug
46mm
51.5mm
Lug Width
20mm
23mm
Material
Stainless Steel
Titanium

Crystal & Dial

1 specs
Lume
Super-LumiNova
None

Movement

3 specs
Caliber
SII NH34
9RA5
Type
Automatic
Spring Drive
Power Reserve
40h
120h

Pricing

1 specs
MSRP
$399
$12,600

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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.

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.

Grand Seiko SLGA015

The Grand Seiko SLGA015 is widely praised for its exceptional accuracy, with owners reporting performance far exceeding the stated 10 seconds per month. The Spring Drive movement's smooth sweep and 5-day power reserve are also noted strengths, as is the lighter titanium case construction. However, some owners find the bracelet extension non-intuitive, and one noted the clasp scratched easily. The watch features a nature-inspired, wave-like dial texture. Overall, owners rate the Grand Seiko SLGA015 highly for its impressive accuracy and quality construction.

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