Side by side

Phoibos Reef MastervsGrand Seiko SLGA015

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

Reef Master
PhoibosReef Master
MSRP $335
SLGA015
Grand SeikoSLGA015
MSRP $12,600

At a glance

11 of 29 specs differ
Diameter
Reef Master42mm
SLGA01543.8mm
Power Reserve
Reef Master40h
SLGA015120h
Water Resistance
Reef Master200m
SLGA015200m
MSRP
Reef Master$335
SLGA015$12,600

Full specifications

Case

5 specs
Diameter
42mm
43.8mm
Thickness
13mm
13.8mm
Lug-to-Lug
48mm
51.5mm
Lug Width
22mm
23mm
Material
Stainless Steel
Titanium

Crystal & Dial

2 specs
Dial Color
Green
Black
Lume
Super-LumiNova
None

Movement

3 specs
Caliber
SII NH38
9RA5
Type
Automatic
Spring Drive
Power Reserve
40h
120h

Pricing

1 specs
MSRP
$335
$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 Reef Master

Owners widely praise the Phoibos Reef Master for its exceptional value, highlighting its sapphire crystal, DLC coating, and extensive BGW9 lume. The watch is noted for its cool lume, with one owner finding it not bulky despite its robust build. The Shamrock Green dial and texture are highly praised, as is the comfortable bracelet with solid end links. However, the bezel action is described as rough, and the basic folding clasp is a disappointment. Accuracy is reported as excellent, with one owner seeing +-2 sec/day. Some find the 42mm size almost too big for their wrists, and the date window is considered too small. Overall, owners rate the Phoibos Reef Master highly for its impressive feature set and value at its price point.

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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