Seiko SUR311 Essentials Collection Watch blue uni-directional rotating elapsed timing

blue uni-directional rotating elapsed timing bezel and tri-fold push button release clasp with secure lock and extender

and developed with added style and function to appeal to young motorsports enthusiasts

with the serial number engraved on each caseback

This versatile timepiece reimagines Seiko's 1965 first diver's watch

meeting every challenge with technological excellence and winning design

Seiko SUR311 Essentials Collection Watch blue uni-directional rotating elapsed timingEssentials CollectionBlack dialDate calendarLumiBrite handsSapphire crystalCase diameter: 40. 2 mmStainless steel case and braceletWater resistant to 10 bar, 100 meters (330 feet)Caliber 6N52