Side by side

Bremont Altitude Perpetual Calendar GMTvsChristopher Ward C63 Sealander Extreme GMT

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

Altitude Perpetual Calendar GMT
BremontAltitude Perpetual Calendar GMT
MSRP $38,450
C63 Sealander Extreme GMT
Christopher WardC63 Sealander Extreme GMT
MSRP $1,850

At a glance

14 of 29 specs differ
Diameter
Altitude Perpetual Calendar GMT42mm
C63 Sealander Extreme GMT48mm
Power Reserve
Altitude Perpetual Calendar GMT40h
C63 Sealander Extreme GMT56h
Water Resistance
Altitude Perpetual Calendar GMT
C63 Sealander Extreme GMT150m
MSRP
Altitude Perpetual Calendar GMT$38,450
C63 Sealander Extreme GMT$1,850

Full specifications

Case

6 specs
Diameter
42mm
48mm
Thickness
12.65mm
12.05mm
Lug-to-Lug
48mm
Material
Titanium
Stainless Steel
Finish
Brushed and polished
Brushed + Bead-blasted + Sandblasted
Water Resistance
150m

Crystal & Dial

3 specs
AR Coating
Inner
Underside
Dial Color
Blue
Black
Lume
None
SLN X1 BL / GL

Movement

4 specs
Caliber
SW330
Beat Rate
28,800 vph
4 vph
Power Reserve
40h
56h
Complications
None
GMT, Moonphase, Day-date

Pricing

1 specs
MSRP
$38,450
$1,850

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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.

Bremont Altitude Perpetual Calendar GMT

The Bremont Altitude Perpetual Calendar GMT is a highly exclusive piece, with one owner noting its $44,000 price point raises questions about its target audience and suggesting it may be a limited production showpiece. Reviewers highlight its refined Trip-Tick case, now featuring softer curves, a 42mm diameter, and a 12.23mm thickness in grade 2 titanium, though the oversized crowns are flagged as a potential drawback. Overall, owners and reviewers acknowledge the Bremont Altitude Perpetual Calendar GMT as a distinctive, albeit niche, high-complication offering with a notable case refinement.

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.

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