Side by side

Phoibos Reef MastervsGrand Seiko SBGE307

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

Reef Master
PhoibosReef Master
MSRP $335
SBGE307
Grand SeikoSBGE307
MSRP $11,500

At a glance

12 of 29 specs differ
Diameter
Reef Master42mm
SBGE30744.5mm
Power Reserve
Reef Master40h
SBGE30772h
Water Resistance
Reef Master200m
SBGE307200m
MSRP
Reef Master$335
SBGE307$11,500

Full specifications

Case

6 specs
Category
Diver
GMT
Diameter
42mm
44.5mm
Thickness
13mm
14.9mm
Lug-to-Lug
48mm
50mm
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
9R66
Type
Automatic
Spring Drive
Power Reserve
40h
72h

Pricing

1 specs
MSRP
$335
$11,500

Follow this matchup

Get a note when Phoibos Reef Master vs Grand Seiko SBGE307 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 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 SBGE307

The Grand Seiko SBGE307 is praised for its unique "lion's mane" textured ivory dial and angular, modern titanium case featuring Zaratsu polishing. Reviewers highlight the aggressive, claw-shaped lugs and the contrasting hairline finishing, as well as the brownish-red GMT hand as a notable accent. The watch is powered by the 9R66 Spring Drive movement, offering a 72-hour power reserve and accuracy rated at +/- 15 seconds per month by one source, and +/- 1 second per day by another. It is priced at $10,700 USD and offers 200m water resistance. On balance, reviewers find the Grand Seiko SBGE307 to be a striking timepiece distinguished by its textured dial and sharp case finishing.

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.