DOXA Sub 300T TivsHeimdallr Sharkey Ocean Monster Diver

Sub 300T Ti
DOXASub 300T Ti

Ref. sub-300-ti5-caribbean·MSRP $3,190

Sharkey Ocean Monster Diver
HeimdallrSharkey Ocean Monster Diver

Ref. heimdallr-monster-automatic-dive-watch·MSRP $139

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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 300T Ti at true scale

Sub 300T Ti

Heimdallr Sharkey Ocean Monster Diver at true scale

Sharkey Ocean Monster Diver

Diameter

42.5mm

41.6mm

Lug-to-Lug

n/a

46.6mm

Thickness

n/a

13.6mm

Water Resistance

300m

highest

200m

MSRP

$3,190

$139

lowest

Movement

Automatic

Hangzhou 2553A

Case

6 specs
Diameter
42.5mm
41.6mm
Thickness
n/a
13.6mm
Lug-to-Lug
n/a
46.56mm
Lug Width
n/a
20mm
Material
Titanium
Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

2 specs
Dial Color
n/a
n/a
Lume
None
Japan SuperLuminova C3 (Green)

Movement

1 specs
Caliber
n/a
Hangzhou 2553A

Pricing

1 specs
MSRP
$3,190
$139
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Reviews

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

DOXA Sub 300T Ti

Owners widely praise the Doxa Sub 300T Ti for its charming, enduring design and excellent bezel action. Reviewers and owners alike note its comfortable 42.5mm cushion case and smooth winding action. Accuracy is reported as excellent, with one owner seeing +/-1.5 seconds per day and another noting it keeps time within COSC specifications. The BOR bracelet offers practical micro-adjustments, though some find its limited articulation at the end link impacts wearability on smaller wrists. The 18mm lug width is noted as limiting strap options, and one reviewer misses the vintage charm of a domed crystal, finding the flat sapphire less engaging. On balance, owners and reviewers rate the Doxa Sub 300T Ti highly for its unique design and comfortable wearability.

Heimdallr Sharkey Ocean Monster Diver

Heimdallr Sharkey Ocean Monster Dive Watch owners praise its looks and lume, with one owner stating it feels even better than the original Seiko Monster it homages. The bezel action is described as clicky with no back play, and the crown is easy to grip and smooth. The watch's opening mechanism is machined rather than pressed, a feature considered excellent for its price point. Some owners note occasional QC issues with chapter rings and find the "Ocean Monster" text on the dial detracts from the aesthetic. One owner reported a negative experience with the store, receiving a watch with serious quality control issues. Accuracy ranges from +6 seconds per day to well-regulated, and while some find the watch comfortable, others note its weight and sharp edges make it uncomfortable. Overall, owners rate the Heimdallr Sharkey Ocean Monster Dive Watch highly for its homage design and bracelet quality, despite some concerns about dial text and occasional quality control.

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