Seiko SRPB53 Prospex Men's Watch Black 44mm Stainless Steel Watch and a rugged blue silicone

and a rugged blue silicone strap

which beats at a frequency of 21

This sporty Swiss watch is water resistant up to 20 bar (200 m/656 ft)

the Seiko Prospex line meets every challenge with technological excellence and style

Essentials CollectionSilver dial with sunray finishDate calendarLumiBrite handsSapphire crystalCase diameter: 40

Seiko SRPB53 Prospex Men's Watch Black 44mm Stainless Steel Watch and a rugged blue siliconeAutomatic Diver Manual and automatic winding capabilities 21,600 vibrations per hour Power reserve: approximately 41 hours 23 jewels One way rotating elapsed timing bezel LumiBrite hands and markers Date calendar Screwdown crown and caseback Case diameter: 44. 0mm stainless steel case Silicone strap Water resistance: Diver's Watch to 200 meters (660 feet). Follows ISO standards and is suitable for scuba diving. Caliber 4R35