Taking inspiration from classic aviator and field watches, the Seiko 5 Sports SRPJ89 is equal parts casual and classy. A 36.4mm brushed stainless steel case houses a green sunray dial with white indices and a day/date window at the three o'clock position. The watch is accented with a brown leather strap and screwdown see-through caseback that shows the Caliber 4R36 movement in action.