Islander Calabro GMT World Time Automatic with Anthracite DialvsGruppo Gamma Field III GMT Date
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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.

Calabro GMT World Time Automatic with Anthracite Dial

Field III GMT Date
Diameter
40mm
40mm
Lug-to-Lug
48mm
lowest
48.5mm
Thickness
14mm
14mm
Water Resistance
200m
200m
Power Reserve
n/a
41h
MSRP
$379
lowest
$459
Movement
Seiko NH34
Seiko NH34
Case
3 specsCrystal & Dial
4 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
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.
Owners widely praise the Gruppo Gamma Field III GMT Date for its incredible quality, awesome looks, and good value for the price. The watch features a 40mm brushed 316L stainless steel case, a box sapphire crystal, and a Seiko NH34 automatic movement. Some owners note accuracy figures ranging from -20 to +40 seconds per day, while others report +5 seconds per day. One user found the 40mm size unsuitable for small wrists. Overall, owners rate the Gruppo Gamma Field III GMT Date highly for its build quality and aesthetic appeal at its price point.
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