Side by side

Christopher Ward C63 Sealander GMTvsSeestern S450 Ocean Star

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

C63 Sealander GMT
Christopher WardC63 Sealander GMT
MSRP $1,675
S450 Ocean Star
SeesternS450 Ocean Star
MSRP $299

At a glance

17 of 29 specs differ
Diameter
C63 Sealander GMT42mm
S450 Ocean Star40mm
Power Reserve
C63 Sealander GMT56h
S450 Ocean Star41h
Water Resistance
C63 Sealander GMT150m
S450 Ocean Star100m
MSRP
C63 Sealander GMT$1,675
S450 Ocean Star$299

Full specifications

Case

9 specs
Category
GMT
Diver
Diameter
42mm
40mm
Thickness
11.5mm
12mm
Lug-to-Lug
48.5mm
48mm
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed + Polished + Sandblasted
Brushed and polished
Water Resistance
150m
100m
Caseback
Display
Solid

Crystal & Dial

2 specs
Dial Color
Blue
White
Lume
SLN X1 BL C1
Tritium

Movement

5 specs
Caliber
SW330
TMI NH35A
Beat Rate
4 vph
21,600 vph
Power Reserve
56h
41h
Jewels
25
24
Complications
GMT, Moonphase, Day-date
GMT, Date

Pricing

1 specs
MSRP
$1,675
$299

Follow this matchup

Get a note when Christopher Ward C63 Sealander GMT vs Seestern S450 Ocean Star 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.

Christopher Ward C63 Sealander GMT

The Christopher Ward C63 Sealander GMT is praised for its comfortable wearability, with reviewers noting its slim profile, short lugs, and 39mm case size, while others prefer the proportions of the 36mm version. The watch features a Light-catcher case with alternating brushed and polished surfaces, and the Bader bracelet is highlighted for its build quality and comfort at its price point. Some owners find the gloss white dial's text and indices small, and the orange accents can appear yellow. The Sellita SW330-2 movement provides caller GMT functionality and a 56-hour power reserve. On balance, owners and reviewers appreciate the Christopher Ward C63 Sealander GMT for its comfortable wearability and solid bracelet construction at its price.

Seestern S450 Ocean Star

Owners widely praise the Seestern S450 Ocean Star's Yachtmaster-style case and flawless bracelet finishing, with one owner noting the ST2130 movement keeps good time. The bezel action is described as having individual notches but feeling like a friction bezel, while another owner flags the bezel and crown action as smooth with perfect alignment. Lume is a point of contention, with one source describing it as a nice cool blue with ice-white application, while others note it as weak or not matching Prospex standards, despite using BGW-9. The watch is considered a "big boy" ideal for larger wrists (19cm+), potentially too large for 17cm wrists due to its size and non-tapering bracelet. Overall, owners rate the Seestern S450 Ocean Star highly for its build quality and finishing at the price point, despite some reservations about its size and lume intensity.

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.