Grand Seiko SLGB005vsLongines MASTER COLLECTION MOONPHASE
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
21 of 29 specs differFull specifications
Case
8 specsCrystal & Dial
5 specsMovement
7 specsPricing
1 specsFollow this matchup
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Owners + reviewers, side by side
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Grand Seiko SLGB005 is widely praised for its stunning "Ice Forest" smoked purple dial, inspired by frost-covered trees, and its compact 37mm Ever-Brilliant Steel case. It is powered by the 9RB2 Spring Drive caliber, noted for its exceptional accuracy of ±3 seconds per month or ±20 seconds per year, and offers a 72-hour power reserve. Reviewers consistently highlight the dial's mesmerizing beauty and the case's sculpted design as significant strengths. However, multiple sources express disappointment that the Grand Seiko SLGB005 omits the micro-adjustment clasp found on other models, especially considering its $11,100 price point, though one reviewer found this did not detract from wearability. Overall, reviewers rate the Grand Seiko SLGB005 highly for its visually arresting dial and precise Spring Drive movement, despite the clasp oversight.
The watch features a ±3 seconds per month accurate Ultra Fine Accuracy Calibre 9RB2 movement. The Ever-Brilliant Steel finish has polishing flaws that detract from the watch's appearance. Reviewers disagree on the movement's accuracy, with one reviewer citing ±3 seconds per month and another ±10 seconds per month.
Owners widely praise the Longines MASTER COLLECTION MOONPHASE for its mesmerizing and legible dial, balancing classic and complex design elements, with many considering it a great value for its complications. Reviewers note the 40mm case feels well-balanced, and the Caliber L899 movement offers a 64-hour power reserve. Some owners suggest the price point may be high relative to alternatives, and the 3 bar water resistance means it is not suitable for swimming, while the complete calendar requires manual adjustment for shorter months. On balance, the consensus is that owners rate the Longines MASTER COLLECTION MOONPHASE highly for its attractive dial and complications at its price point.
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