Side by side

Henry Archer ArkonavsSinn U18

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Arkona
Henry ArcherArkona
MSRP $4,999
U18
SinnU18
MSRP $3,488
What people say

Owners + reviewers, side by side

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

Henry Archer Arkona

Owners widely praise the Henry Archer Arkona for its dial, overall build quality, and value, with one owner calling it a "thing of beauty" and another a "shockingly good value for the price." The lume is noted as killer, and the 40mm case wears smaller. However, some owners find the guilloche dial standard and similar to other brands, and one commenter feels the brand sticks too closely to a "bling Explorer" niche. One owner found the bracelet detracted from the dial, preferring a rubber strap, and another noted the bracelet tapers to 16mm, which felt narrower than preferred. On balance, owners rate the Henry Archer Arkona highly for its dial aesthetics and perceived value.

Sinn U18

The Sinn U18 is praised for its unique deep blue/green dial with three-dimensional oxygen bubbles that change with light, and its comfortable, easily adjustable bracelet. Owners find the watch stunning and a piece of history, appreciating the refined hands. The Sinn U18 features a 44mm, 15.5mm thick case made from German submarine steel, offering a 2000-meter dive specification and Sinn's Ar-Dehumidifying technology, powered by a Sellita SW300-1 movement. The case thickness is apparent, and the watch comes as a complete set with box and papers for $3,000-$3,680. On balance, owners and reviewers rate the Sinn U18 highly for its striking dial and robust build.

At a glance

15 of 29 specs differ
Diameter
Arkona40mm
U1844mm
Power Reserve
Arkona40h
U1842h
Water Resistance
Arkona200m
U182,000m
MSRP
Arkona$4,999
U18$3,488

Full specifications

Case

8 specs
Diameter
40mm
44mm
Thickness
11.5mm
15.5mm
Lug-to-Lug
47mm
Lug Width
20mm
22mm
Material
316L Stainless Steel
high-strength
Finish
Brushed and polished
Water Resistance
200m
2000m
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Inner
Dial Color
Sylva
Black
Indices
Applied

Movement

2 specs
Caliber
Miyota 9015
SW300-1
Power Reserve
40h
42h

Pricing

1 specs
MSRP
$4,999
$3,488
Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Follow this matchup

Get a note when Henry Archer Arkona vs Sinn U18 gets more votes, a community discussion, or a price drop. No account needed.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.