Side by side

Grand Seiko SLGB023vsYema Navygraf Heritage

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

SLGB023
Grand SeikoSLGB023
MSRP $12,400
Navygraf Heritage
YemaNavygraf Heritage
MSRP $990

At a glance

11 of 29 specs differ
Diameter
SLGB02340.8mm
Navygraf Heritage39mm
Power Reserve
SLGB02372h
Navygraf Heritage40h
Water Resistance
SLGB023300m
Navygraf Heritage100m
MSRP
SLGB023$12,400
Navygraf Heritage$990

Full specifications

Case

6 specs
Diameter
40.8mm
39mm
Thickness
12.9mm
10.85mm
Lug-to-Lug
48.5mm
46mm
Lug Width
21mm
19mm
Material
Titanium
316L Stainless Steel
Water Resistance
300m
100m

Crystal & Dial

1 specs
AR Coating
Yes
Inner

Movement

3 specs
Caliber
9RB1
Sellita SW200
Type
Spring Drive
Automatic
Power Reserve
72h
40h

Pricing

1 specs
MSRP
$12,400
$990

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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 SLGB023

Owners and reviewers widely praise the Grand Seiko SLGB023 for its comfortable 40.8mm titanium case and the smooth winding feel of its Spring Drive 9RB1 movement. The dial's gradient blue "ushio" motif is a highlight, though some reviewers note the bezel's fully lumed scale as a missed opportunity. Enthusiasts are divided on the power reserve indicator's placement and the design of the hour and minute hands. Overall, owners and reviewers rate the Grand Seiko SLGB023 highly for its comfortable titanium case and the refined Spring Drive movement.

Yema Navygraf Heritage

Owners widely praise the Yema Navygraf Heritage for its comfortable 39mm wearability and faithful 1970s reissue design, noting craftsmanship better than expected. Some owners report quality control issues including bezel free play and misalignment, while others find the bezel very tight to turn despite precise 120 clicks. The in-house MBP2000 movement is noted by some to be loud and run approximately +10 to +15 seconds per day. On balance, owners appreciate the Yema Navygraf Heritage for its retro aesthetic and comfortable sizing, with noted concerns around movement accuracy and bezel action.

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