Islander Calabro GMT World Time WatchvsPhoibos Leviathan

Ref. islander-calabro-gmt-world-time-watch-with-full-lume-dial-isl-244·MSRP $329
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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 Watch

Leviathan
Diameter
40mm
40mm
Lug-to-Lug
14mm
lowest
48mm
Thickness
14mm
13mm
lowest
Water Resistance
200m
200m
MSRP
$329
lowest
$399
Movement
Seiko NH34
Seiko NH35
Case
2 specsCrystal & Dial
3 specsMovement
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Islander Calabro GMT World Time Watch for its excellent value and quality, with many appreciating the attractive split dial design and the "true" GMT functionality powered by the Seiko NH34 automatic movement. Specific positive points include the retro day window, a well-regarded bracelet with screw links and micro-adjustments, and applied indices. One owner noted the watch is 39mm, not 40mm, and found the lume not as advertised, while another suggested improvements to the busy dial layout. On balance, owners rate the Islander Calabro GMT World Time Watch highly for its impressive feature set and design at its affordable price point.
The Phoibos Leviathan is widely praised for its superb case finishing, generous lume, and original design elements, offering excellent value. Owners consistently highlight the quality of the bracelet, including its milled clasp with quick adjustments and on-the-fly microadjustment on newer models, and the visually striking, legible dials. Some owners find the watch heavy and large, with one suggesting a smaller 37mm or 38mm case size would be ideal, and others note the stock rubber strap can be thick and sticky. Accuracy varies, with some reporting it keeps accurate time out of the box, while others note a loss of 5-10 seconds per day without a winder. The bezel's jimping is also flagged as potentially causing fingers to slip. On balance, owners rate the Phoibos Leviathan highly for its robust build, excellent finishing, and desirable features at an accessible price point.
The case finishing and bezel action are praised. The bracelet, particularly the clasp, is identified as an area for improvement. Reviewers are split on the watch's wrist presence, with some noting its improved 40mm size and others describing it as having a "beast"-like presence.
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