Side by side

Halios Seaforth IVvsLongines CONQUEST

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

Seaforth IV
HaliosSeaforth IV
MSRP $765
CONQUEST
LonginesCONQUEST
MSRP $2,850

At a glance

23 of 29 specs differ
Diameter
Seaforth IV40mm
CONQUEST41mm
Power Reserve
Seaforth IV40h
CONQUEST72h
Water Resistance
Seaforth IV200m
CONQUEST100m
MSRP
Seaforth IV$765
CONQUEST$2,850

Full specifications

Case

9 specs
Category
Diver
Diameter
40mm
41mm
Thickness
12.4mm
10.9mm
Lug-to-Lug
46.5mm
49.1mm
Lug Width
20mm
21mm
Material
Titanium
Stainless Steel
Finish
Brushed and polished
Water Resistance
200m
100m
Caseback
Solid
Screw-down and transparent with sapphire crystal case back

Crystal & Dial

6 specs
Crystal
Sapphire (double-domed)
Sapphire
Crystal Shape
Flat
AR Coating
Inner
Both sides
Dial Color
Blue
Black
Indices
Applied
Diamond indexes
Lume
None
Super-LumiNova

Movement

7 specs
Caliber
Sellita SW200-2
L888.5
Beat Rate
28,800 vph
25,200 vph
Power Reserve
40h
72h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
Hours, minutes, seconds and date

Pricing

1 specs
MSRP
$765
$2,850

Follow this matchup

Get a note when Halios Seaforth IV vs Longines CONQUEST gets more votes, a community discussion, or a price drop. No account needed.

What people say

Owners + reviewers, side by side

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

Halios Seaforth IV

Owners widely praise the Halios Sunburst Blue for its perfect 40mm size, stunning sunburst dial, and excellent lume, with one owner calling it Halios's best effort and a potential "Omega AT killer." The ETA 2824 movement is noted as running smoothly, and the watch is considered a great value with strong resale. Some owners desire larger sizes or different dial colors, and one reviewer found the Sinn 556i more versatile. The sapphire bezel is described as tall and flat, which is a point of contention for some. Overall, owners rate the Halios Sunburst Blue highly for its design, size, and value.

From video reviewers

The sunburst blue dial is a standout feature. Limited water resistance is a shared concern.

Longines CONQUEST

Owners widely praise the Longines CONQUEST for its high-quality finishing, excellent value, and versatile design, with many citing the L888.5 movement and 72-hour power reserve as key strengths. The watch is frequently noted for its comfortable bracelet and attractive dials, offering comparable quality to more expensive alternatives. However, several owners and reviewers point out the lack of micro-adjustment on the bracelet clasp as a significant drawback, with some also noting the polished surfaces are prone to micro-scratches and the lume is inconsistent across variants, with only some models featuring lumed hands. On balance, owners and reviewers rate the Longines CONQUEST highly for its impressive finishing and value proposition, particularly its robust movement and versatile wearability.

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.

Adjacent matchups

People also compared

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