AVI-8 Flyboy Airmaster GMT AutomaticvsRZE Fortitude GMT
lug2lug doesn't sell watches. Buy links open the brand's or seller's own site. Some links are affiliate links: lug2lug may earn a commission at no extra cost to you. Disclosures
Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Flyboy Airmaster GMT Automatic

Fortitude GMT
Diameter
40mm
41mm
Lug-to-Lug
n/a
47mm
Thickness
n/a
12mm
Water Resistance
50m
200m
highest
MSRP
$345
lowest
$719
Movement
Seiko NH34
Miyota 9075
Case
6 specsCrystal & Dial
3 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
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.
The RZE Fortitude GMT is praised for its lightweight titanium construction, scratch-resistant UltraHex coating, and comfortable bracelet with micro-adjustment. Owners and reviewers highlight its value under $700, with one owner noting exceptional accuracy at -1 to +1 seconds per day, while another source states the Miyota 9075 movement is rated between -10/+30 seconds per day. Some find the GMT hand lume confusing and the rotor loud, and a smaller screwdriver is required for bracelet sizing. Overall, owners and reviewers rate the RZE Fortitude GMT highly for its traveler-friendly features and value.
The titanium construction and sandwich dial are consistent strengths. The lume brightness was not consistently addressed.
Similar watches
Matched to the watches above on size, movement, style and price, microbrands first. Open any one to dig in.
Also compared
Comparisons nearby in the catalog: alternatives to the watches above paired against the matchup.









