Side by side

Christopher Ward C63 Sealander Extreme GMTvsSternglas Naos Großdatum

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
Naos Großdatum
SternglasNaos Großdatum
MSRP $323

At a glance

17 of 29 specs differ
Diameter
C63 Sealander Extreme GMT48mm
Naos Großdatum38mm
Power Reserve
C63 Sealander Extreme GMT56h
Naos Großdatum
Water Resistance
C63 Sealander Extreme GMT150m
Naos Großdatum50m
MSRP
C63 Sealander Extreme GMT$1,850
Naos Großdatum$323

Full specifications

Case

7 specs
Category
GMT
Dress
Diameter
48mm
38mm
Thickness
12.05mm
10mm
Lug-to-Lug
48mm
42mm
Lug Width
22mm
20mm
Finish
Brushed + Bead-blasted + Sandblasted
Brushed and polished
Water Resistance
150m
50m

Crystal & Dial

3 specs
AR Coating
Underside
Inner
Dial Color
Black
Lume
SLN X1 BL / GL
Luminova Punkten

Movement

6 specs
Caliber
SW330
Seiko VJ76
Type
Automatic
Quartz
Beat Rate
4 vph
28,800 vph
Power Reserve
56h
Jewels
25
Complications
GMT, Moonphase, Day-date
None

Pricing

1 specs
MSRP
$1,850
$323

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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.

Sternglas Naos Großdatum

The Sternglas Naos Großdatum is praised for its Bauhaus aesthetic and value, with one owner finding it an affordable alternative to other designs. However, some owners report it feels underwhelming and cheap, with a printed-on face, small font, and toy-like hands, and find the strap to be of poor quality. The watch features a 38mm stainless steel case, an Alabaster dial with beige LumiNova, and a Seiko TMI VJ76 quartz movement rated for -20/+20 seconds per month. On balance, owners and reviewers are divided, with the primary point of contention being the perceived quality and aesthetic execution of the Sternglas Naos Großdatum.

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