Side by side

Grand Seiko SLGW003vsLongines MASTER COLLECTION MOONPHASE

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

SLGW003
Grand SeikoSLGW003
MSRP $11,600
MASTER COLLECTION MOONPHASE
LonginesMASTER COLLECTION MOONPHASE
MSRP $3,500

At a glance

20 of 29 specs differ
Diameter
SLGW00338.6mm
MASTER COLLECTION MOONPHASE34mm
Power Reserve
SLGW00380h
MASTER COLLECTION MOONPHASE
Water Resistance
SLGW00330m
MASTER COLLECTION MOONPHASE30m
MSRP
SLGW003$11,600
MASTER COLLECTION MOONPHASE$3,500

Full specifications

Case

8 specs
Category
Dress
Moonphase
Diameter
38.6mm
34mm
Thickness
9.95mm
11.2mm
Lug-to-Lug
45mm
49.7mm
Lug Width
20mm
21mm
Material
Titanium
Stainless Steel
Finish
Brushed and polished
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Yes
Dial Color
Black
Silver
Indices
Applied

Movement

7 specs
Caliber
9SA4
L899.5
Type
Manual
Automatic
Beat Rate
28,800 vph
0 vph
Power Reserve
80h
0h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No

Pricing

1 specs
MSRP
$11,600
$3,500

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What people say

Owners + reviewers, side by side

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

Grand Seiko SLGW003

The Grand Seiko SLGW003 is praised for its comfortable, lightweight Brilliant Hard Titanium case, meticulous finishing, and a clean, modern dial. Reviewers highlight the new 9SA4 manual-wind movement, noting its attractive finishing, 80-hour power reserve, and accuracy of -3/+5 seconds per day. It is considered a versatile dress watch blending vintage and future Grand Seiko spirit. The €11,700 price is noted as expensive, with some questioning its value. Overall, reviewers rate the Grand Seiko SLGW003 highly for its elegant design and impressive manual-wind movement at its flagship price point.

Longines MASTER COLLECTION MOONPHASE

Owners widely praise the Longines Master Collection Moonphase for its beautiful, legible, and mesmerizing dial, with one owner noting it balances class and complexity. The watch offers old-world charm and a romantic moonphase complication, with the Caliber L899 movement providing a 64-hour power reserve. Some owners find the $3k price point high, suggesting better value exists elsewhere, while others acquired it for around $1700 USD. One owner notes the 40mm size is a perfect fit for a 6.75-inch wrist, though its limited water resistance makes it unsuitable for adventurous wear. On balance, the consensus is that the Longines Master Collection Moonphase is highly regarded for its classic design and attractive moonphase complication at its price point.

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