Side by side

Grand Seiko SBGY007vsSugess Seestern Heritage S436-2 BB GMT

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

SBGY007
Grand SeikoSBGY007
MSRP $8,900
Seestern Heritage S436-2 BB GMT
SugessSeestern Heritage S436-2 BB GMT
MSRP $299

At a glance

14 of 29 specs differ
Diameter
SBGY00738.5mm
Seestern Heritage S436-2 BB GMT40mm
Power Reserve
SBGY00772h
Seestern Heritage S436-2 BB GMT35h
Water Resistance
SBGY00730m
Seestern Heritage S436-2 BB GMT10m
MSRP
SBGY007$8,900
Seestern Heritage S436-2 BB GMT$299

Full specifications

Case

6 specs
Category
Dress
GMT
Diameter
38.5mm
40mm
Thickness
10.2mm
12.2mm
Lug-to-Lug
43.7mm
48mm
Lug Width
19mm
20mm
Water Resistance
30m
10m

Crystal & Dial

2 specs
AR Coating
Yes
Inner
Lume
None
Tritium

Movement

5 specs
Caliber
9R31
Seiko NH34
Type
Spring Drive
Automatic
Beat Rate
28,800 vph
3 vph
Power Reserve
72h
35h
Complications
None
GMT, Moonphase, Date

Pricing

1 specs
MSRP
$8,900
$299

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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 SBGY007

Grand Seiko SBGY007 owners and reviewers widely praise its stunning, textured blue dial, inspired by frozen Lake Suwa, and its clean, time-only aesthetic. The watch is lauded for its impeccable finishing, including high polish and Zaratsu polishing, and its classic, thin 38.5mm stainless steel dress case. The hand-wound Spring Drive Caliber 9R31 movement is noted for its accuracy, rated to ±1 second per day, and a 72-hour power reserve, with its power reserve indicator discreetly placed on the case back. While some reviewers suggest room for improvement in Grand Seiko's pricing structure, the $8,300 USD price is seen by others as a relatively affordable entry into the brand's high-end offerings. On balance, the consensus is that the Grand Seiko SBGY007 is highly regarded for its exceptional dial artistry and refined finishing at its price point.

Sugess Seestern Heritage S436-2 BB GMT

Owners widely praise the Sugess Seestern Heritage S436-2 BB GMT for its 39mm sizing, 12mm thinness, and light yet solid feel, with many appreciating its legibility due to the matte dial, clear crystal, and strong lume, though one owner flags the lume as a weak point. The case finishing is considered excellent, and the blue dial and satin finish are favorably compared to alternatives. Some owners report issues with a loose bezel, with others finding it improved after tuning, and one owner notes the seconds hand is too short. The bracelet clasp lacks sufficient micro-adjustment and screw pins are difficult to remove. On balance, owners rate the Sugess Seestern Heritage S436-2 BB GMT highly for its comfortable wearability and attractive finishing at the price.

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