Islander Calabro GMT World Time Automatic with Anthracite DialvsGrand Seiko SBGJ249
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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

SBGJ249
Diameter
40mm
39.5mm
Lug-to-Lug
48mm
46.9mm
lowest
Thickness
14mm
lowest
14.1mm
Water Resistance
200m
highest
30m
Power Reserve
n/a
55h
MSRP
$379
lowest
$7,700
Movement
Seiko NH34
Grand Seiko 9S86
Case
6 specsCrystal & Dial
2 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.
Grand Seiko SBGJ249 owners and reviewers widely praise its "out of this world" finishing on the dial, case, hands, and indices, with particular admiration for the vibrant, horizontally patterned light blue wave dial that evokes summer ripples. The watch is considered a "no-brainer" for Grand Seiko fans seeking a GMT with a special twist, offering outstanding value at $6,800 due to its proportions and visually interesting dial. Accuracy figures range from +3 seconds per day to -3 to +5 seconds per day. One drawback noted by reviewers is the 30-meter water resistance, considered low for a summer-themed watch. Overall, owners and reviewers rate the Grand Seiko SBGJ249 highly for its spectacular beauty and finishing at the price point.
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