LoupeLabWatch Comparison
Grand Seiko Automatic Hi Beat 36000 GMT Stainless Steel / Silver / Strap vs Grand Seiko Spring Drive Stainless Steel / Silver / Bracelet
Side-by-side specifications for Grand Seiko Automatic Hi Beat 36000 GMT Stainless Steel / Silver / Strap and Grand Seiko Spring Drive Stainless Steel / Silver / Bracelet.
Showing specs with available data (96% coverage).
Grand Seiko
Grand Seiko Automatic Hi Beat 36000 GMT Stainless Steel / Silver / Strap
Ref. SBGM221
Grand Seiko
Grand Seiko Spring Drive Stainless Steel / Silver / Bracelet
Ref. SBGA299
Case
Diameter39.5 mm40.5 mm
Thickness13.9 mm12.9 mm
MaterialStainless SteelStainless Steel
Water Resist.100 m100 m
CrystalSapphireSapphire
Dial Color—Silver
Movement
CaliberGrand Seiko 9S66Grand Seiko 9R65
ManufacturerGrand SeikoGrand Seiko
TypeAutomaticSpring Drive
Power Reserve72 hrs72 hrs
Frequency36,000 bph--
Jewels3530
Complicationshours, minutes, seconds, additional 24 hour hand (adjustable), datehours, minutes, seconds, date, power reserve indicator
Pricing & Production
CollectionMechanicalSpring Drive
Grand Seiko
Grand Seiko Automatic Hi Beat 36000 GMT Stainless Steel / Silver / Strap Ref. SBGM221
Grand Seiko
Grand Seiko Spring Drive Stainless Steel / Silver / Bracelet Ref. SBGA299
Case
Diameter
SBGM22139.5 mm
SBGA29940.5 mm
Thickness
SBGM22113.9 mm
SBGA29912.9 mm
Material
SBGM221Stainless Steel
SBGA299Stainless Steel
Water Resist.
SBGM221100 m
SBGA299100 m
Crystal
SBGM221Sapphire
SBGA299Sapphire
Dial Color
SBGM221—
SBGA299Silver
Sponsored
Movement
Caliber
SBGM221Grand Seiko 9S66
SBGA299Grand Seiko 9R65
Manufacturer
SBGM221Grand Seiko
SBGA299Grand Seiko
Type
SBGM221Automatic
SBGA299Spring Drive
Power Reserve
SBGM22172 hrs
SBGA29972 hrs
Frequency
SBGM22136,000 bph
SBGA299--
Jewels
SBGM22135
SBGA29930
Complications
SBGM221hours, minutes, seconds, additional 24 hour hand (adjustable), date
SBGA299hours, minutes, seconds, date, power reserve indicator
Pricing & Production
Collection
SBGM221Mechanical
SBGA299Spring Drive
Sponsored