Seiko SPB187 SPB187J SPB187J1 Prospex Marinemaster Automatic Scuba Divers Blue Dial Watch

Seiko Prospex Automatic Blue Dial Watch SPB187J1 SPB187J SPB187Specifications:Seiko Prospex Marinemaster SeriesAutomatic with Manual Winding#SPB187J1Blue DialAnalog Display200m Water ResistanceCaliber 6R3524 JewelsSapphire CrystalStainless Steel Case (Super Hard Coating)Anti-Reflective Coating on Inner SurfaceDate IndicatorLumibrite on Hands, Indexes and BezelStop Second Hand FunctionScrew Case BackScrew-Down CrownThree-Fold Clasp with Secure LockUnidirectional Rotating BezelAccuracy: +25 to -15 Seconds Per DayDuration: Approx. 70 HoursCase Size Diameter: 42mmCase Size Thickness: 12.5mmCase Size Length: 48.8mmWeight: 186g