Seiko 5 Sports

The Seiko 5 Sports, reference SBSA237, has a 42.5 mm steel case. This is a limited edition of 7500 pieces. The case is 13.4 mm thick, with a lug-to-lug measurement of 46 mm and a water-resistance rating of 100 metres. Self-winding calibre 4R36 contains 24 jewels and has a power reserve of approximately 41 hours. The dial has a date display and a day display. A textile strap is attached to the watch; LumiBrite appears on the hands and indices. A see-through case back provides a view of the movement; movement accuracy is plus 45 to minus 35 seconds per day. A Hardlex crystal covers the dial.