Loresum LS05vsGrand Seiko SLGW007

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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.

Loresum LS05 at true scale

LS05

Grand Seiko SLGW007 at true scale

SLGW007

Diameter

39.5mm

38.6mm

Lug-to-Lug

46.5mm

45mm

lowest

Thickness

9mm

lowest

9.9mm

Water Resistance

50m

highest

30m

Power Reserve

40h

80h

highest

MSRP

n/a

$10,000

Movement

Miyota 9015

Grand Seiko 9SA4

Case

5 specs
Diameter
39.5mm
38.6mm
Thickness
9mm
9.95mm
Lug-to-Lug
46.5mm
45mm
Lug Width
n/a
20mm
Water Resistance
50m
30m

Crystal & Dial

3 specs
AR Coating
n/a
Yes
Dial Color
Green
n/a
Lume
Super-LumiNova® BGW9
None

Movement

3 specs
Caliber
Miyota 9015
Grand Seiko 9SA4
Type
Automatic
Manual
Power Reserve
40h
80h

Pricing

1 specs
MSRP
n/a
$10,000
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Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Loresum LS05

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.

Grand Seiko SLGW007

The Grand Seiko SLGW007 is lauded for its refined 38.6mm Evolution 9 case, measuring 9.95mm in thickness, and its captivating blue "Moonlit Birch" dial with a moody, elegant texture. Owners and reviewers alike highlight the technically credible 9SA4 manual-wind movement, noting its 80-hour power reserve and buttery winding feel. Its 30m water resistance and lack of lume are acknowledged as fitting for a dress watch. On balance, the Grand Seiko SLGW007 is highly regarded for its sophisticated dial and refined case design, making it a compelling dress watch offering.