Side by side

Phoibos Reef MastervsGrand Seiko SLGH017

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

Reef Master
PhoibosReef Master
MSRP $335
SLGH017
Grand SeikoSLGH017
MSRP $10,500

At a glance

11 of 29 specs differ
Diameter
Reef Master42mm
SLGH01740mm
Power Reserve
Reef Master40h
SLGH01780h
Water Resistance
Reef Master200m
SLGH017100m
MSRP
Reef Master$335
SLGH017$10,500

Full specifications

Case

6 specs
Category
Diver
Dress
Diameter
42mm
40mm
Thickness
13mm
11.7mm
Lug-to-Lug
48mm
47mm
Material
Stainless Steel
Titanium
Water Resistance
200m
100m

Crystal & Dial

2 specs
Dial Color
Green
Black
Lume
Super-LumiNova
None

Movement

2 specs
Caliber
SII NH38
9SA5
Power Reserve
40h
80h

Pricing

1 specs
MSRP
$335
$10,500

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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 SLGH017

Grand Seiko SLGH017 owners and reviewers widely praise its impeccable finishing on the applied markers and handset, and its lightweight titanium case and bracelet. The high-beat 9SA5 movement is noted for its approximately 80-hour power reserve, with accuracy figures reported by owners ranging from +4 sec/day to +5 to -3 seconds per day, though some owners express concerns about accuracy deviating significantly from specifications. Some find the "Night Birch" dial stunning and appreciate the Evo 9 case design, while others note the dial texture appears less pronounced on its matte black surface and criticize the handset's proportions and lack of lume. The Grand Seiko SLGH017 is priced at €10,500. On balance, owners and reviewers rate the Grand Seiko SLGH017 highly for its lightweight titanium construction and impeccable finishing.

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