Seiko 5 Sports Style Automatic SRPD63 SRPD63K1 SRPD63K 100M Men's Watch Seiko re-vamped their much-loved Seiko 5 line up and introduced an alternative entry-level watch that has become a staple among rugged, mechanical urban wear. Like its predecessor, it represents a cornerstone in Seikoâs enthusiast-focused offerings, starting a new chapter in the Seiko 5's impressive history. Overall, a mechanical watch that fits in everywhere, from the rough terrains to your everyday life.