Sinn U18vsZelos Hammerhead 2 1000m Steel ETA2892

Hammerhead 2 1000m Steel ETA2892
ZelosHammerhead 2 1000m Steel ETA2892

Ref. hammerhead-2-1000m-steel-black-sand-eta2892-launch-special·MSRP $749

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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.

Sinn U18 at true scale

U18

Zelos Hammerhead 2 1000m Steel ETA2892 at true scale

Hammerhead 2 1000m Steel ETA2892

Diameter

44mm

44mm

Lug-to-Lug

n/a

48mm

Thickness

15.5mm

lowest

17mm

Water Resistance

2000m

highest

1000m

Power Reserve

42h

n/a

MSRP

$3,488

$749

lowest

Movement

Sellita SW300-1

Seiko NH35

Case

6 specs
Thickness
15.5mm
17mm
Lug-to-Lug
n/a
48mm
Material
high-strength
Bronze
Finish
n/a
n/a
Water Resistance
2000m
1000m
Caseback
n/a
n/a

Crystal & Dial

4 specs
Crystal Shape
n/a
n/a
AR Coating
n/a
n/a
Dial Color
Black
n/a
Indices
n/a
n/a

Movement

4 specs
Caliber
Sellita SW300-1
Seiko NH35
Beat Rate
28,800 vph
0 vph
Power Reserve
42h
0h
Jewels
25
0

Pricing

1 specs
MSRP
$3,488
$749
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Reviews

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

Sinn U18

The Sinn U18 is lauded for its unique deep blue/green dial with three-dimensional oxygen bubbles that shift with light, and its comfortable, easily adjustable bracelet. Owners describe the 44mm case as having apparent thickness, with one noting minor wear on the underside of the lugs from strap changes. The watch is praised for its versatility, amazing accuracy, and great quality. The Sinn U18 comes with a Sellita SW300-1 movement and a 2000-meter dive specification. On balance, owners and reviewers rate the Sinn U18 highly for its unique dial and overall quality at its price point.

Zelos Hammerhead 2 1000m Steel ETA2892

Owners and reviewers speak well of the Zelos Hammerhead 2 1000m Steel ETA2892. An owner praises the steel bracelet as very good and another commenter calls the lume "crazy," with the brand's original takes on familiar designs also drawing praise. The editorial reviewer, a giveaway winner, found it attractive, solid and reliable, said it keeps great time, and reported the 48-hour power reserve held up, with the 49mm lug-to-lug sitting well on a slim wrist. Some caveats appear: one owner preferred the included leather strap, the high Damascus-steel bezel may not suit classical tastes, and the double-domed sapphire reflects in full sunlight. Overall, owners and reviewers rate the Hammerhead 2 highly for its finishing, lume and timekeeping at its price.