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

Framed by a tachymeter scale

The watch comes with a pastel green rubber strap

with a subtly gradated dial pattern evoking the changing colors of the night sky

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

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