LoupeLabWatch Comparison
Grand Seiko Automatic GMT Stainless Steel / Black / Bracelet vs Grand Seiko Spring Drive Stainless Steel / Silver / Bracelet
Side-by-side specifications for Grand Seiko Automatic GMT Stainless Steel / Black / Bracelet and Grand Seiko Spring Drive Stainless Steel / Silver / Bracelet.
Showing specs with available data (97% coverage).
Grand Seiko
Grand Seiko Automatic GMT Stainless Steel / Black / Bracelet
Ref. SBGM227
Grand Seiko
Grand Seiko Spring Drive Stainless Steel / Silver / Bracelet
Ref. SBGA299
Case
Diameter39.4 mm40.5 mm
Thickness14.1 mm12.9 mm
MaterialStainless SteelStainless Steel
Water Resist.100 m100 m
CrystalSapphireSapphire
BezelFixed Plain—
Dial ColorBlackSilver
Movement
CaliberGrand Seiko 9S86Grand Seiko 9R65
ManufacturerGrand SeikoGrand Seiko
TypeAutomaticSpring Drive
Power Reserve55 hrs72 hrs
Frequency36,000 bph--
Jewels3730
Complicationshours, minutes, additional 24 hour hand (adjustable), seconds, datehours, minutes, seconds, date, power reserve indicator
Pricing & Production
CollectionMechanicalSpring Drive
Grand Seiko
Grand Seiko Automatic GMT Stainless Steel / Black / Bracelet Ref. SBGM227
Grand Seiko
Grand Seiko Spring Drive Stainless Steel / Silver / Bracelet Ref. SBGA299
Case
Diameter
SBGM22739.4 mm
SBGA29940.5 mm
Thickness
SBGM22714.1 mm
SBGA29912.9 mm
Material
SBGM227Stainless Steel
SBGA299Stainless Steel
Water Resist.
SBGM227100 m
SBGA299100 m
Crystal
SBGM227Sapphire
SBGA299Sapphire
Bezel
SBGM227Fixed Plain
SBGA299—
Dial Color
SBGM227Black
SBGA299Silver
Sponsored
Movement
Caliber
SBGM227Grand Seiko 9S86
SBGA299Grand Seiko 9R65
Manufacturer
SBGM227Grand Seiko
SBGA299Grand Seiko
Type
SBGM227Automatic
SBGA299Spring Drive
Power Reserve
SBGM22755 hrs
SBGA29972 hrs
Frequency
SBGM22736,000 bph
SBGA299--
Jewels
SBGM22737
SBGA29930
Complications
SBGM227hours, minutes, additional 24 hour hand (adjustable), seconds, date
SBGA299hours, minutes, seconds, date, power reserve indicator
Pricing & Production
Collection
SBGM227Mechanical
SBGA299Spring Drive
Sponsored