DOXA SUB 300vsSynchron Poseidon

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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.

DOXA SUB 300 at true scale

SUB 300

Synchron Poseidon at true scale

Poseidon

Diameter

42.5mm

41mm

Lug-to-Lug

n/a

45mm

Thickness

n/a

11.9mm

Water Resistance

300m

300m

Power Reserve

38h

68h

highest

MSRP

$2,890

n/a

Movement

Automatic

La Joux-Perret G100

Case

5 specs
Diameter
42.5mm
41mm
Thickness
n/a
11.9mm
Lug-to-Lug
n/a
45mm
Lug Width
n/a
20mm
Material
Stainless Steel
Titanium

Crystal & Dial

4 specs
Crystal Shape
Domed
n/a
AR Coating
Yes
n/a
Dial Color
Aquamarine
Sunshine Yellow
Lume
Super-LumiNova
None

Movement

2 specs
Caliber
n/a
La Joux-Perret G100
Power Reserve
38h
68h

Pricing

1 specs
MSRP
$2,890
n/a
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Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

DOXA SUB 300

The DOXA SUB 300 is widely praised for its wearability, vibrant color options, and modern updates like improved lume, with reviewers calling it the brand's most desirable model. Owners note its comfortable wear, clean cushion case, and legible dials, though some find the 42.5mm case a bit large. The bezel action is outstanding, and the beads-of-rice bracelet contributes to a smaller perceived size. However, some owners report issues with bracelet end links sticking out, a sharp clasp edge, sub-standard screw pins, and disappointing lume. The polished bezel surface is also noted as prone to scratches, and the clasp's top section and clip are described as feeling "tinnyness" and too sixties. On balance, owners and reviewers rate the DOXA SUB 300 highly for its compelling charm and modern updates, despite some noted bracelet and clasp refinements.

Synchron Poseidon

Owners widely praise the Synchron Poseidon for its vintage-inspired diver aesthetics, easy-to-read dial, and precise, grippy bezel. The La Joux-Perret G100 movement is consistently noted as a strong point, with owners reporting good timekeeping, one seeing accuracy around -4 seconds per day, and others highlighting its 68-hour power reserve. The winding action and crown operation are described as reassuring, with one reviewer stating it surpasses watches at double the price. Some find the design busy or the branding confusing, and the blasted finish on the steel bezel rim contrasts with the brushed case. One owner noted the included Isofrane strap can be long for smaller wrists. On balance, owners and reviewers rate the Synchron Poseidon highly for its robust build, reliable movement, and excellent value.