Heimdallr Sharkey Mini Turtle DivervsPhoibos Leviathan

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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.

Heimdallr Sharkey Mini Turtle Diver at true scale

Sharkey Mini Turtle Diver

Phoibos Leviathan at true scale

Leviathan

Diameter

45.5mm

45mm

Lug-to-Lug

47.7mm

lowest

54mm

Thickness

13.3mm

lowest

15.5mm

Water Resistance

200m

500m

highest

MSRP

$149

lowest

$309

Movement

Hangzhou 2553A

Seiko NH35

Case

4 specs
Diameter
45.5mm
45mm
Thickness
13.3mm
15.5mm
Lug-to-Lug
47.7mm
54mm
Water Resistance
200m
500m

Crystal & Dial

3 specs
AR Coating
n/a
Yes
Dial Color
n/a
Blue
Lume
None
Super-LumiNova

Movement

1 specs
Caliber
Hangzhou 2553A
Seiko NH35

Pricing

1 specs
MSRP
$149
$309
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Reviews

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

Heimdallr Sharkey Mini Turtle Diver

Owners widely praise the Heimdallr SHARKEY Mini Turtle Dive Watch for its excellent finishing and surprising reliability, with many noting its good wearability and comfortable fit for its 45.5mm case size. The lume is generally considered strong, and the included rubber strap is well-regarded, with some owners opting to keep it. Accuracy figures vary, with one owner reporting +6 seconds per day and another seeing +-2 seconds per day, while one owner experienced losing a couple of minutes daily with poor lume. The bezel action is described as not as refined as higher-end watches, and one owner noted a slightly misaligned bezel. Overall, owners rate the Heimdallr SHARKEY Mini Turtle Dive Watch highly for its value, build quality, and satisfying Turtle-style aesthetic.

Phoibos Leviathan

The Phoibos Leviathan is noted for its sturdy, well-made construction and vintage aesthetic, offering a conservative design at an affordable price. Owners report the 45mm case feels heavy and thick at 15.5mm, with one owner replacing the stock band. The watch features a grey dial and blue lume. Overall, owners find the Phoibos Leviathan to be a well-built, vintage-inspired watch at an accessible price point.

From video reviewers

The watch features 500m water resistance and a Seiko NH35 automatic movement. The case size is a point of contention, with reviewers noting it is substantial and may overwhelm smaller wrists, while others highlight a 40mm case size as an improvement.