MOVEMENT CALIBER NUMBER: 8T63 MOVEMENT TYPE: QUARTZ PRECISION: ±15 SECONDS PER MONTH BATTERY LIFE: APPROX. 3 YEARS FUNCTIONS 24-HOUR HAND EQUIPPED WITH SMALL SECONDS HAND CHRONOGRAPH UP TO 60 MINUTES IN 1/5 SECOND INCREMENTS DATE DISPLAY CASE MATERIAL: STAINLESS STEEL CASE SIZE: THICKNESS:12.6MM, DIAMETER:38.7MM, LUG-TO-LUG:45.1MM CRYSTAL: BOX-SHAPED HARDLEX LUMIBRITE: LUMIBRITE ON HANDS AND INDEX(ES) CLASP: THREE-FOLD CLASP WITH PUSH BUTTON RELEASE DISTANCE BETWEEN LUGS: 20MM WATER RESISTANCE: 5 BAR MAGNETIC RESISTANCE: 4,800 A/M WEIGHT: 110.0 FEATURES TACHYMETER FUNCTION SCREW CASE BACK