Side by side

Christopher Ward C63 Sealander Extreme GMTvsLongines HYDROCONQUEST

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

C63 Sealander Extreme GMT
Christopher WardC63 Sealander Extreme GMT
MSRP $1,850
HYDROCONQUEST
LonginesHYDROCONQUEST
MSRP $2,000

At a glance

22 of 29 specs differ
Diameter
C63 Sealander Extreme GMT48mm
HYDROCONQUEST41mm
Power Reserve
C63 Sealander Extreme GMT56h
HYDROCONQUEST72h
Water Resistance
C63 Sealander Extreme GMT150m
HYDROCONQUEST300m
MSRP
C63 Sealander Extreme GMT$1,850
HYDROCONQUEST$2,000

Full specifications

Case

9 specs
Category
GMT
Diver
Diameter
48mm
41mm
Thickness
12.05mm
11.9mm
Lug-to-Lug
48mm
53.5mm
Lug Width
22mm
21mm
Material
Stainless Steel
Ceramic
Finish
Brushed + Bead-blasted + Sandblasted
Water Resistance
150m
300m
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Underside
Dial Color
Black
Green
Indices
Applied
Lume
SLN X1 BL / GL
None

Movement

7 specs
Caliber
SW330
L888.5
Beat Rate
4 vph
0 vph
Power Reserve
56h
72h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
GMT, Moonphase, Day-date
None

Pricing

1 specs
MSRP
$1,850
$2,000

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What people say

Owners + reviewers, side by side

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

Christopher Ward C63 Sealander Extreme GMT

Owners and reviewers widely praise the Christopher Ward C63 Sealander Extreme GMT for its excellent value, tactical and travel-ready design, and impressive lume, with the black dial being a collective favorite. Its 41mm brushed steel case is noted for comfort and wearability, complemented by a well-proportioned design and excellent legibility. The watch features a Sellita SW330-2 movement with a 56-hour power reserve and 150m water resistance, including a shock-absorbing mount. Some find its refinement slightly less than pricier alternatives, and its GMT movement is considered less practical than a flyer GMT. On balance, the Christopher Ward C63 Sealander Extreme GMT is highly regarded by owners and reviewers for its compelling blend of features, rugged design, and exceptional value.

Longines HYDROCONQUEST

Owners widely praise the Longines Hydroconquest for its attractive sunburst blue dial and accurate timekeeping, with one owner reporting a loss of only 2 seconds per day. However, the bracelet is frequently criticized for lacking micro-adjustments and having pinch-prone links, and the screw-down crown is noted as inconvenient and difficult to operate by multiple owners. Some owners also flag the bezel action as ratchety with back play, and one owner found the lugs sharp and the overall design uncomfortable, leading them to sell the watch. On balance, owners appreciate the Longines Hydroconquest's aesthetic appeal and value, despite significant reservations about its bracelet and crown usability.

From video reviewers

The bezel action is praised for its smooth and precise rotation. Lume brightness is a shared weakness, found to be somewhat lacking. Reviewers disagreed on the watch's value proposition compared to alternatives.

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