Loresum LS05vsSartory Billard SB05
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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.

LS05

SB05
Diameter
39.5mm
38.5mm
Lug-to-Lug
46.5mm
45.5mm
lowest
Thickness
9mm
8.5mm
lowest
Water Resistance
50m
50m
Power Reserve
40h
90h
highest
Movement
Miyota 9015
La Joux-Perret 7380
Case
4 specsCrystal & Dial
2 specsMovement
3 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Loresum LS05 for its elegant dial execution, particularly the aventurine and Great Wave designs, and its attractive dimensions, including a thin profile. The moonphase complication is a significant draw, with many finding it a compelling feature at its price point, and the overall finishing is considered well done. However, some owners find the watch too dressy for everyday wear, and the included strap is noted as being of low quality. One owner reported excellent customer service for a repair. The Miyota 9015 movement is standard, with its moonphase cycle drifting over time and reversing lunar waxing/waning. On balance, owners rate the Loresum LS05 highly for its visually striking dials and value proposition, especially for its moonphase complication.
Owners widely praise the Sartory Billard SB05 for its highly customizable design process, allowing for unique dial combinations and intricate finishing details like guilloché and hammered textures. The 38.5mm case is noted as slender and wearable. One reviewer found the hand-wound La Joux-Perret 7380 movement accurate to within +/- 7 seconds per day, with a 90-hour power reserve. Overall, owners and reviewers rate the Sartory Billard SB05 highly for its bespoke customization options and attractive, detailed dial work.
The dial's Maki-e Raden and aventurine combination is a standout feature. The 38.5mm case size and slim profile are noted for comfort.
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