Citizen Series 8 880 GMTvsGrand Seiko SBGM245
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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.

Series 8 880 GMT

SBGM245
Diameter
41mm
40.5mm
Lug-to-Lug
n/a
48.6mm
Thickness
13.5mm
lowest
14.4mm
Water Resistance
100m
200m
highest
Power Reserve
50h
72h
highest
MSRP
$1,495
lowest
$6,100
Movement
Miyota 9054
Grand Seiko 9S66
Case
5 specsCrystal & Dial
2 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners praise the Citizen Series 8 880 GMT's refined, modern look and textured, snowflake-like dial. Reviewers note its striking gunmetal coating, gold-plated bezel, and true GMT movement. The watch features a 41mm case and 100m water resistance. One owner questions the price point, while another awaits a different colorway. The Miyota 9054 movement has a broad accuracy specification of -10/+20 seconds per day and a 50-hour power reserve. Overall, owners and reviewers appreciate the Citizen Series 8 880 GMT's distinctive design and GMT functionality, though some express reservations about its price.
Owners widely praise the Grand Seiko SBGM245 as a compelling mechanical GMT, blending sport and luxury with notable workmanship. Some owners find its 40.5mm case size and 14.4mm thickness wearable, while others consider it too large and prefer slimmer alternatives. The polished surfaces are noted to scratch easily, suggesting it is best suited for dressier occasions. Accuracy figures vary, with one owner reporting an average gain of two seconds per day, while others express a desire for a thinner case and a clasp with quick extension. Overall, owners rate the Grand Seiko SBGM245 highly for its mechanical GMT functionality and craftsmanship, despite some reservations about its size and scratch resistance.
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