Side by side
Grand Seiko SBGW306vsSpinnaker Challenger Automatic
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
13 of 29 specs differDiameter
SBGW30636.5mm
Challenger Automatic42mm
Power Reserve
SBGW30672h
Challenger Automatic40h
Water Resistance
SBGW306100m
Challenger Automatic200m
MSRP
SBGW306$17,900
Challenger Automatic$289
Full specifications
Case
7 specsCategory
Dress
Diver
Diameter
36.5mm
42mm
Thickness
11.7mm
19mm
Lug-to-Lug
42.7mm
49.5mm
Lug Width
18mm
22mm
Material
Gold
316L Stainless Steel
Water Resistance
100m
200m
Crystal & Dial
2 specsAR Coating
Yes
Inner
Dial Color
Black
Blue
Movement
3 specsCaliber
9S64
SII NH35A
Type
Manual
Automatic
Power Reserve
72h
40h
Pricing
1 specsMSRP
$17,900
$289
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