Seiko Mens Astron Novak Djokovic limited edition SSE060Novak Djokovic Limited Edition - 3,000 pieces worldwide - signature and number engraved on casebackGPS Solar Dual TimeGPS controlled time and time zone adjustmentMagnetic resistance 4,800A/mPerpetual day and date calendar correct to the year 2100Signal reception result indicationDual time indicator (40 time zones)AM/PM indicatorDaylight savings time functionPower save functionSapphire glass with Seiko's proprietary super clear, anti-reflective coatingTri-fold push button release claspLumiBrite hands and markers100M water resistantCaliber 8X53 3 YEAR WARRANTY