Seiko SUR311 Essentials Collection Watch Celebrates Seiko Prospex's ongoing efforts

Celebrates Seiko Prospex's ongoing efforts to promote ocean exploration and conservationAutomatic diver with manual winding capability21

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

meeting every challenge with technological excellence and winning design

Framed by a tachymeter scale

Seiko SUR311 Essentials Collection Watch Celebrates Seiko Prospex's ongoing effortsEssentials CollectionBlack dialDate calendarLumiBrite handsSapphire crystalCase diameter: 40. 2 mmStainless steel case and braceletWater resistant to 10 bar, 100 meters (330 feet)Caliber 6N52