Side by side

Naga Watches SpirevsGrand Seiko SBGW306

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

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Spire
Naga WatchesSpire
MSRP $853
SBGW306
Grand SeikoSBGW306
MSRP $17,900
Buy from Naga Watches ↗
Buy used on eBay ↗
Buy from Grand Seiko ↗
Buy used on eBay ↗

At a glance

12 of 29 specs differ
Diameter
Spire39mm
SBGW30636.5mm
Power Reserve
Spire—
SBGW30672h
Water Resistance
Spire100m
SBGW306100m
MSRP
Spire$853
SBGW306$17,900

Full specifications

Case

6 specs
Category
—
Dress
Diameter
39mm
36.5mm
Thickness
9.9mm
11.7mm
Lug-to-Lug
—
42.7mm
Lug Width
—
18mm
Material
Stainless Steel
Gold

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Dial Color
White
Black

Movement

3 specs
Caliber
Miyota 9039
9S64
Type
Automatic
Manual
Power Reserve
—
72h

Pricing

1 specs
MSRP
—
$17,900
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