Side by side

Christopher Ward C63 Sealander Extreme GMTvsSeestern S446 GMT

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 $2,075
S446 GMT
SeesternS446 GMT
MSRP $299

At a glance

15 of 29 specs differ
Diameter
C63 Sealander Extreme GMT40mm
S446 GMT39.5mm
Power Reserve
C63 Sealander Extreme GMT56h
S446 GMT41hh
Water Resistance
C63 Sealander Extreme GMT150m
S446 GMT100m
MSRP
C63 Sealander Extreme GMT$2,075
S446 GMT$299

Full specifications

Case

6 specs
Diameter
40mm
39.5mm
Thickness
12.05mm
13mm
Lug-to-Lug
48mm
47mm
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
150m
100m

Crystal & Dial

3 specs
Crystal Shape
Flat
Domed
Dial Color
Black
Cream
Lume
SLN X1 BL / GL
None

Movement

5 specs
Caliber
SW330-2
Seiko NH34A GMT
Beat Rate
4 vph
3 vph
Power Reserve
56h
41hh
Jewels
25
24
Complications
GMT
GMT, Date

Pricing

1 specs
MSRP
$2,075
$299

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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

The Christopher Ward C63 Sealander Extreme GMT is widely praised as a competent and comfortable tool watch offering excellent value. Reviewers consistently highlight its impressive Globolight lume, providing excellent legibility, and its well-proportioned 41mm brushed steel case. The Sellita SW330-2 movement is noted as reliable, though its standard accuracy is stated as ±20 seconds per day, and its GMT functionality is considered less advanced than some alternatives. One owner notes the green dial can be an acquired taste, and hands and markers are considered less refined than those on significantly more expensive watches. The Christopher Ward C63 Sealander Extreme GMT is priced attractively at €1,895 on bracelet. Overall, owners and reviewers highly regard the Christopher Ward C63 Sealander Extreme GMT for its rugged, travel-ready design and impressive lume at its price point.

Seestern S446 GMT

Owners widely praise the Seestern S446 GMT for its stunning finishing and extreme value, with a sapphire crystal and adjustable clasp. The winding action is noted as buttery smooth, and the 39.5mm case size is considered very wearable. Some owners, however, flag the lume as a weak point and one owner found the bracelet clasp lacked sufficient micro-adjustment. The Seestern S446 GMT is considered an extreme value for the dollar. Overall, owners rate the Seestern S446 GMT highly for its exceptional finishing and value proposition at its price point.

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