BOLDR Supply Co. Globetrotter GMTvsIslander Calabro GMT World Time Automatic with Anthracite Dial
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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.

Globetrotter GMT

Calabro GMT World Time Automatic with Anthracite Dial
Diameter
40mm
40mm
Lug-to-Lug
48mm
48mm
Thickness
12.7mm
lowest
14mm
Water Resistance
200m
200m
MSRP
$469
$379
lowest
Movement
Seiko NH34
Seiko NH34
Case
2 specsCrystal & Dial
4 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Boldr Globetrotter GMT as a compelling sports watch and excellent value, with one owner finding it "addicting to look at." Reviewers highlight the watch's outstanding legibility, featuring applied Super-LumiNova indices and sword hands on a matte black dial. The ceramic bezel is noted for its tight, knurled grip and smooth, quiet bidirectional ratcheting action. One reviewer specifically mentions the multi-city ceramic bezel's sharp markings and orange accents. However, one owner expresses disappointment, stating Boldr "missed the mark with this model." Overall, owners and reviewers largely laud the Boldr Globetrotter GMT for its legibility and bezel action, despite one dissenting opinion.
Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316 owners widely report excellent value at its $329 MSRP, citing the Seiko NH34 automatic movement, sapphire crystal, and well-proportioned 40mm case. The watch features a handsome anthracite dial with applied indices and a quality 120-click unidirectional bezel. On balance, owners rate the Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316 highly for its value and robust feature set at the price point.
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