Celebrating the 25th anniversary of the Grand Seiko 9F quartz caliber – Caliber 9F 25th Anniversary Limited Edition: SBGT241
Caliber 9F
- Instantaneous calendar change
- Enhanced durability and reliability
- A backlash auto-adjust mechanism to eliminate any shuddering of the second hand
- A twin pulse control system to deliver increased torque
- A special construction to minimize the risk of dust coming into contact with the gear train and stepping motor.
Concept
- Each quartz oscillator is specially selected to allow the achievement of an annual accuracy of +/- 5 seconds.
- The dial features a 5-pointed star as a symbol of this high level of accuracy.
Design
- A Zaratsu-polished case
- A white dial
- Case diameter is enlarged, from 37mm to 39.1mm
- High-definition crystal
- Dual-curved sapphire
- An anti-reflective coating for exceptional clarity
A special ‘9F25’ design is adopted, as inspired by the quartz symbol
A 5-pointed star is found just above the 6 o’clock position on the dial
- The Grand Seiko lion emblem in 18K gold is engraved at the stainless steel case back
- A unique serial number is also found at the back
Movement
- A specially enhanced precision rate of +/- 5 seconds a year
- A quartz movement crafted by hand
Limited Edition of 1,500
Celebrating the 25th anniversary of the Grand Seiko 9F quartz caliber – Caliber 9F 25th Anniversary Limited Edition: SBGV238
Design
The Grand Seiko Style – A contemporary re-interpretation of the acclaimed 44GS design from 1967.
Dial Pattern –
- A special monogrammed pattern that follows the design of the traditional Quartz symbol
- A special ‘9F25’design monogram is above the 5 o’clock marker
The 5-pointed star –
- Symbolizes the excellent prevision rate of +/- 5 seconds a year
- is above the 6 o’clock marker
See-through case back –
- ‘Grand Seiko’ is on the inside of the sapphire exhibition case back
- Caliber 9F 25th Anniversary Limited Edition’ and serial number
Movement
- Specially adjusted movement, with enhanced precision rate of +/- 5 seconds a year
- A quartz movement crafted by hand
Limited Edition of 600
Celebrating the 25th anniversary of the Grand Seiko 9F quartz caliber
The Grand Seiko team decided to go further by focusing on the precision and durability of the new quartz caliber.
Caliber 9F 25th Anniversary Limited Editions
Caliber 9F83 (SBGT241) / Caliber 9F82 (SBGV238)
Accuracy: +/- 5 seconds per year (at temperatures from 5°C to 35°C)
Specifications
- Stainless steel case and bracelet
- 18k yellow gold bezel (SBGV238)
- High definition dual-curved sapphire crystal with anti-reflective coating
- Screw see-through case back (SBGV238), Screw-down crown (SBGT241)
- Diameter: 39.1mm (SBGT241) / 40mm (SBGV238)
- Thickness: 10.9mm (SBGT241) / 10mm (SBGV238)
- Water resistance: 10 Bar
- Magnetic resistance: 4,800 A/m
- Limited Edition of 1,500 pcs (SBGT241) / 600 pcs (SBGV238)
Source: Grand Seiko
