Grand Seiko SBGR307
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Reference Number: SBGR307

Grand Seiko SBGR307

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Kintaro Hattori founded Grand Seiko in Japan in 1881 and the brand introduced its first watch in 1969. Since then Grand Seiko has been producing some of the world's best timepieces. Grand Seiko is one of the most well-known Japanese brands and has expanded worldwide, establishing itself as an exquisite luxury watch maker. Grand Seiko’s combination of technology and history has given it an incomparable, unique reputation.

Every watch polisher in Grand Seiko practices "Togashi," a Japanese sword polishing technique, and they stay true to this ancient practice while adding a modern twist. In addition to Togashi, "zarutsu" is also practiced, which is a technique used for machinery polishing. Every Grand Seiko watch is polished by hand using these techniques.

Honoring heritage within their branding has allowed Grand Seiko to produce exceptional, renowned timepieces such as the Grand Seiko SBGR307.

Grand Seiko SBGR307 Review

The Grand Seiko SBGR307 was designed with simplicity and purity in mind. It is also one of the largest watches made by Grand Seiko which gives it a sporty look. The watch offers ease of use, elegance, and precision. The SBGR307 also provides the wearer with highly accurate timekeeping.


The exterior is luxurious and displays perfect craftsmanship. The Grand Seiko SBGR307 has a stainless steel case which allows the watch to function well; stainless steel is rustproof and remarkably strong, especially for wrist wear. The case has a diameter of 42mm and a thickness of 13.1mm.

The watch's glass is a dual-curved sapphire crystal that can withstand deep underwater pressure. The watch's screw-down crown further adds to the water resistance, as the crown's screwing mechanism keeps it protected.

The glass also has an anti-reflective coating on its inner surface which causes less eye strain. To provide proper fitting on every individual's wrist, Grand Seiko has kept the band's perimeter size to 205 mm with a threefold clasp that has push bottom release.


The Grand Seiko SBGR307 has a caliber number 9S68. It is large and has automatic mechanical movements with winding capacity. The watch offers a simple display with three hands as well as a calendar function.

Magnetic Resistance

Antimagnetic watches are a must in the 21st century; computers, smartphones, and kitchen appliances create magnetic fields all around us. The Grand Seiko SBGR307 is thus equipped with magnetic resistance which allows the watch to fight off any magnetic fields that may disrupt its functions, especially the balance spring.

Power Reserve

The Grand Seiko SBGR307 is equipped with a power reserve of up to three days (72 hours). The watch also has an accuracy of +5 to -3 seconds a day when static and +10 seconds to -1 seconds during regular use.

Weight and Other Features

The Grand Seiko SBGR307 weighs a comfortable 173.0g. It has 35 brilliant jewels that showcase its luxury and stunning beauty.

The case back displays the Grand Seiko lion brand emblem and is see-through, allowing the wearer to view the interesting mechanisms within the watch.


Grand Seiko is one of the most innovative watchmaking brands. They have a firm understanding of every watch enthusiast's ideal watch. If you wish to buy a Grand Seiko SBGR307 visit We look forward to serving you.

Watch Features

CaseStainless Steel
Case BackExhibition Case Back
Case Width42mm
Case Thickness13.1mm
CrystalAnti-reflective Sapphire Crystal
Dial ColorSilver
Dial MarkersAppliques
FunctionsHours, Minutes, Seconds, Date
MovementAutomatic, calibre 9S68, 72 hours power reserve, magnetic resistance: 4,800 A/m [60 Gauss], accuracy: -3 - +5 Sec per Day
Water Resistance100 meters
Bracelet StrapStainless steel
Clasp TypeFolding
Warranty5 Year
BrandGrand Seiko

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