Introduced in 2010, the Grand Seiko 50th anniversary High-Beat model (SBGH015) comes with a high-precision 10-hz movement that exceeds the 1970 “special standard”.
In 1960, it was born as a high-precision mechanical watch equivalent to the Swiss chronometer excellent standard as a “domestic luxury product that challenges Swiss luxury products”. Grand Seiko eventually established its own stricter standard certification, and in 1970, the “Grand Seiko Special” was launched. The 50th anniversary model (reference SBGH015) is a unique variant endowed with the new standard certification, which is a further improvement of the GS special standard.
Limited to 300 pieces, Grand Seiko SBGH015 features a 40.2mm diameter stainless steel case. Its white dial highlights the 18K yellow gold GS lion emblem and the 50th anniversary inscription near the date window at 3 o’clock. The GS logo, brand name and the letters “SPECIAL” and HI-BEAT 36000 are placed above the 6 o’clock marker. The centre seconds hand is in blue color.
The anniversary High-Beat model houses the Caliber 9S85, which beats at 36,000 vibrations per hour and provides an exceptional accuracy (-2 seconds to +4 seconds per day).
The rotating weight of the movement, which is visible through the exhibition case-back, is decorated with the “lion’s coat of arms” made of 18K yellow gold.
Model: Grand Seiko 50th Anniversary High-Beat Mechanical Limited Edition, Reference SBGH015
Dual curve sapphire glass (with non-reflective coating)
Case-back: Sapphire glass (see-through back)
Water resistance: 100 meters
Magnetic resistance: JIS magnetic resistant watch 1 type
Case diameter: 40.2mm
Screw lock type crown
Mechanical movement Caliber 9S85
Winding method: Automatic winding (with manual winding)
Time accuracy: Average daily difference -2 seconds to +4 seconds (static accuracy)
Power reserve: 55 hours
Date display function
Number of jewels: 37 jewels
Number of vibrations: 36,000 vibrations / hour (10 vibrations / second)
Movement diameter: 28.4mm
Limited to 300 pieces
Grand Seiko Master Shops in Japan
Suggested retail price
682,500 yen (650,000 yen without tax)