Grand Seiko
SBGE257 - SPORT SPRING DRIVE GMT
REF: SBGE257
Materials
Stainless steel case with ceramic bezel. Glass is dual-curved sapphire crystal with anti-reflective coating on inner surface. Screw-down crown. Screw case back. Stainless steel bracelet, three-fold clasp with push button release.
Dial
Green dial with baton hour markers. LumiBrite on hands and indexes. Date display at 4 o'clock position.
Functions
Hours, minutes, seconds, date and 24-hours (GMT). 24 hour hand can be adjusted to second time zone. Stop seconds hand function. Power reserve indicator. Water resistant to 200 metres (20 bar). Magnetic resistance 4,800 A/m.
Power Source
Spring Drive - powered by the movement of the wearer. Calibre 9R66 (Analogue - G.M.T). 30 jewels. Accuracy of ±1 second per day / ±15 seconds per month (average). Power reserve of approximately 72 hours.
Diameter
40.5mm
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