
Grand Seiko
Sport
Ref. SBGM247
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Specifications
Reference
- Collection
- Sport
- Reference
- SBGM247
Case
- Material
- Stainless steel
- Size
- 40.5 mm
- Water resistance
- 200 m
Movement
- Calibre
- Mechanical
- Power reserve
- 72 hours
About this reference
The GMT hand allows the time to be read in a second time zone and the hour hand can be adjusted without compromising the watch’s accuracy. This dual-time capability is the perfect function for the world traveler and is here available in a high-performance sports watch. The hour and minute hands are substantial and carry LumiBrite so as to be easily legible, day and night. The GMT hand is in orange and has a distinctive shape that makes it readable at a glance against the green dial. The screw-down crown is recessed at the four o’clock position for extra security and the watch is water resistant to 20 bar. All this, in a case that is just 40.5 mm in diameter. The convenience of GMT meets the high functionality of a true sports timepiece. Quite a combination. Exterior: Exterior: Stainless steel; Case back: Screw case back; Glass Material: Dual-curved sapphire crystal; Glass Coating: Anti-reflective coating on inner surface; LumiBrite: Lumibrite on hands and index(es); Case size: Diameter 40.5mm Lug-to-lug 48.6mm Thickness 14.4mm; Band width: 20mm; Clasp type: Folding clasp with push button release; The perimeter of Band: 192mm. Movement: Caliber no.: 9S66 Instructions; Movement Type: Self-winding with manual-winding; Power reserve: Approx. 72 hours(3 days); Mean daily rate: +5 to -3 seconds per day Mean daily rate is a mean value of daily rates in a condition where the movement before assembly in a case is measured in six positions in a fixed manner under artificially controlled environment for 12 days.; Normal usage accuracy: +10 to -1 seconds per day. Functions: Water resistance: 20 bar; Magnetic resistance: 4,800 A/m; Weight: 180 g; Other details / Features: Screw-down crown 35 jewels 24-hour hand (dual time display function) Calendar-linked time difference adjustment function.
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