AVI-8 Flyboy Airmaster GMT AutomaticvsChristopher Ward C63 Sealander Extreme GMT

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Measurements

Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

AVI-8 Flyboy Airmaster GMT Automatic at true scale

Flyboy Airmaster GMT Automatic

Christopher Ward C63 Sealander Extreme GMT at true scale

C63 Sealander Extreme GMT

Diameter

40mm

41mm

Lug-to-Lug

n/a

48mm

Thickness

n/a

12.1mm

Water Resistance

50m

150m

highest

Power Reserve

n/a

56h

MSRP

$345

lowest

$2,075

Movement

Seiko NH34

Sellita SW330-2

Case

6 specs
Diameter
40mm
41mm
Thickness
n/a
12.05mm
Lug-to-Lug
n/a
48mm
Lug Width
n/a
22mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
50m
150m

Crystal & Dial

1 specs
Lume
None
SLN X1 BL / GL

Movement

5 specs
Caliber
Seiko NH34
Sellita SW330-2
Beat Rate
0 vph
4 vph
Power Reserve
0h
56h
Jewels
0
25
Complications
None
GMT

Pricing

1 specs
MSRP
$345
$2,075
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Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

AVI-8 Flyboy Airmaster GMT Automatic

Owners widely praise the AVI-8 Flyboy Airmaster GMT Automatic for its unique aviator style, robust build, and crisp dial texture, with one owner noting a complex three-timezone function. The watch is considered fun and wearable with solid dimensions, though some find the dial busy and difficult to read, and the stock strap is noted as cheap with limited lug hole options. Some owners question the quality relative to price, while others acknowledge that AVI-8 watches, often featuring Seiko NH34 movements, are generally considered decent for their $100-$200 price point. On balance, owners rate the AVI-8 Flyboy Airmaster GMT Automatic well for its standout aviator design and value at the price.

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, with reviewers highlighting its impressive lume and tactical, travel-ready design. Owners and reviewers note its 41mm brushed steel case, Globolight lume, and Sellita SW330-2 movement, which is generally considered reliable despite a standard accuracy rating of ±20 seconds per day. Some find the green dial an acquired taste and consider its hands and markers less refined than those on significantly more expensive watches. On balance, owners and reviewers rate the Christopher Ward C63 Sealander Extreme GMT highly for its impressive lume and value proposition.