Phoibos Reef MastervsSeiko Prospex Sea PADI Special Edition

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Measurements

Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Phoibos Reef Master at true scale

Reef Master

Seiko Prospex Sea PADI Special Edition at true scale

Prospex Sea PADI Special Edition

Diameter

42mm

43.8mm

Lug-to-Lug

48mm

lowest

48.7mm

Thickness

13mm

12.8mm

lowest

Water Resistance

200m

200m

Power Reserve

n/a

41h

MSRP

$335

lowest

$625

Movement

Seiko NH38

Seiko 4R35

Case

3 specs
Diameter
42mm
43.8mm
Thickness
13mm
12.8mm
Lug-to-Lug
48mm
48.7mm

Crystal & Dial

3 specs
AR Coating
Yes
Anti-reflective coating on inner surface
Dial Color
Green
n/a
Lume
Super-LumiNova
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Seiko NH38
Seiko 4R35
Power Reserve
0h
41h
Jewels
0
23

Pricing

1 specs
MSRP
$335
$625
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Reviews

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, with many highlighting the sapphire crystal, AR coating, and extensive BGW9 lume. The DLC coating's scratch resistance and the included leather and rubber straps are also noted positives. Some owners find the 42mm case surprisingly comfortable and not overly bulky. The Shamrock Green dial and texture, as well as the recessed sandwich dial and lumed bezel creating a 3D effect, have received specific praise. Accuracy is reported as good, with one owner noting +-2 sec/day. Criticisms include a rough bezel action that may require lubrication, a disappointing basic folding clasp, and a date window that is too small. The watch's logo has been described as "ugly AF" by some commenters. Overall, owners rate the Phoibos Reef Master highly for its impressive feature set and build quality at its price point.

From video reviewers

The Reef Master offers excellent value for its price point. Reviewers noted concerns regarding the bracelet quality.

Seiko Prospex Sea PADI Special Edition

Owners praise the Seiko Prospex Sea PADI Special Edition for its attractive, jewel-toned teal dial with an ocean-mimicking pattern and LumiBrite for legibility. Some reviewers note the watch offers good value under $1,000 with a rich dial aesthetic and refined case. The 43.8mm case is considered a bit thick by some, and its design can make the watch wear top-heavy and feel larger than its dimensions suggest, with a lug-to-lug that might be long for smaller wrists. The 4R35 movement's stated accuracy range is broad, with some owners seeing +/- 15-25 seconds per day. Overall, owners and reviewers rate the Seiko Prospex Sea PADI Special Edition highly for its vibrant dial and solid build at its price point.

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