Side by side
Seestern S446 GMTvsGrand Seiko SBGW306
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
16 of 29 specs differDiameter
S446 GMT39.5mm
SBGW30636.5mm
Power Reserve
S446 GMT41hh
SBGW30672h
Water Resistance
S446 GMT100m
SBGW306100m
MSRP
S446 GMT$299
SBGW306$17,900
Full specifications
Case
6 specsCategory
GMT
Dress
Diameter
39.5mm
36.5mm
Thickness
13mm
11.7mm
Lug-to-Lug
47mm
42.7mm
Lug Width
20mm
18mm
Material
316L Stainless Steel
Gold
Crystal & Dial
3 specsCrystal Shape
Domed
Flat
AR Coating
Inner
Yes
Dial Color
Cream
Black
Movement
6 specsCaliber
Seiko NH34A GMT
9S64
Type
Automatic
Manual
Beat Rate
3 vph
28,800 vph
Power Reserve
41hh
72h
Jewels
24
25
Complications
GMT, Date
None
Pricing
1 specsMSRP
$299
$17,900
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