SEIKO Prospex Alpinist SPB505
MOVEMENT:
CALIBER NUMBER: 6R55
MOVEMENT TYPE: AUTOMATIC WITH MANUAL WINDING
PRECISION: +25 TO -15 SECONDS PER DAY
POWER RESERVE: APPROX. 72 HOURS (3 DAYS)
JEWELS: 24
FUNCTIONS: STOP SECOND HAND FUNCTION
CASE/BAND:
CASE MATERIAL: STAINLESS STEEL (SUPER HARD COATING)
CASE SIZE: THICKNESS: 12.7 MM, DIAMETER: 39.5 MM, LUG-TO-LUG: 46.4 MM
CRYSTAL: SAPPHIRE CRYSTAL WITH MAGNIFIER
CRYSTAL COATING: ANTI-REFLECTIVE COATING ON INNER SURFACE
LUMIBRITE: LUMIBRITE ON HANDS AND INDEX(ES)
CLASP: THREE-FOLD CLASP WITH PUSH BUTTON RELEASE
DISTANCE BETWEEN LUGS: 20 MM
OTHER DETAILS:
WATER RESISTANCE: 20 BAR
MAGNETIC RESISTANCE: 4,800 A/M
WEIGHT: 147.0 G
FEATURES: ROTATING COMPASS BEZEL, SCREW-DOWN CROWN, SEE-THROUGH & SCREW CASE BACK