Side by side

Christopher Ward C63 Sealander Extreme GMTvsYema Flygraf Bi-Compax French Air Force

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
Flygraf Bi-Compax French Air Force
YemaFlygraf Bi-Compax French Air Force
MSRP $490

At a glance

16 of 29 specs differ
Diameter
C63 Sealander Extreme GMT48mm
Flygraf Bi-Compax French Air Force40mm
Power Reserve
C63 Sealander Extreme GMT56h
Flygraf Bi-Compax French Air Force40h
Water Resistance
C63 Sealander Extreme GMT150m
Flygraf Bi-Compax French Air Force100m
MSRP
C63 Sealander Extreme GMT$1,850
Flygraf Bi-Compax French Air Force$490

Full specifications

Case

8 specs
Category
GMT
Chronograph
Diameter
48mm
40mm
Thickness
12.05mm
9.5mm
Lug-to-Lug
48mm
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed + Bead-blasted + Sandblasted
Brushed and polished
Water Resistance
150m
100m

Crystal & Dial

2 specs
AR Coating
Underside
Inner
Lume
SLN X1 BL / GL
None

Movement

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

Pricing

1 specs
MSRP
$1,850
$490

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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.

Yema Flygraf Bi-Compax French Air Force

Owners widely praise the Yema Flygraf Bi-Compax French Air Force for its attractive, toolish aesthetic and excellent quality for the price, noting the legible Type A dial and 40mm titanium case. However, the acrylic crystal scratches easily, and the titanium case is prone to marking. The mecha-quartz movement's chrono timer sweeps rather than ticks, and one owner questions the purpose of the oversized crown. The in-house Yema 2000 movement is accurate at +/- 10 seconds per day but has a 42-hour power reserve, and some owners express concerns regarding Yema's past quality control and customer service. On balance, owners rate the Yema Flygraf Bi-Compax French Air Force highly for its attractive design and value, despite concerns about material durability and brand service history.

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