Side by side

RGM Watches Model 455 Classic ChronographsvsGrand Seiko SLGW007

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

What people say

Owners + reviewers, side by side

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

RGM Watches Model 455 Classic Chronographs

Owners praise RGM Watches for its American craftsmanship, rarity, and old-school quality, with some finding the designs mesmerizing and aspirational. The tele and tachy scales are noted as brilliantly done with pure vintage coloring, though the smaller time-register contributes to a diminutive appearance. Some owners find RGM watches special and unusual, appreciating direct interaction with the maker, while others find many designs boring. One owner reported a negative experience, finding their RGM diver "horrid," while another "loves" their RGM 801-COE SW. On balance, owners rate RGM Watches highly for its unique American craftsmanship and bespoke potential, despite a high price point.

Grand Seiko SLGW007

Grand Seiko SLGW007 owners and reviewers praise its compact 38.6mm x 9.95mm Evolution 9 case and the textured "Moonlit Birch" dial, described as moody, elegant, and captivating. The technically credible 9SA4 hand-wound movement with an 80-hour power reserve is also highlighted. Its 30m water resistance and lack of lume are noted as appropriate for a dress watch. Overall, owners and reviewers rate the Grand Seiko SLGW007 highly for its refined case, captivating dial, and updated movement.

At a glance

10 of 29 specs differ
Diameter
Model 455 Classic Chronographs38.2mm
SLGW00738.6mm
Power Reserve
Model 455 Classic Chronographs40h
SLGW00780h
Water Resistance
Model 455 Classic Chronographs50m
SLGW00730m
MSRP
Model 455 Classic Chronographs$7,950
SLGW007$10,000

Full specifications

Case

5 specs
Category
Dress
Diameter
38.2mm
38.6mm
Thickness
13.9mm
9.95mm
Lug-to-Lug
46mm
45mm
Water Resistance
50m
30m

Crystal & Dial

1 specs
AR Coating
Inner
Yes

Movement

3 specs
Caliber
ETA 7750
9SA4
Type
Automatic
Manual
Power Reserve
40h
80h

Pricing

1 specs
MSRP
$7,950
$10,000
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