Seiko was the first to the party with its Astron, a handsome but busy watch that had even mechanical watch aficionados lining up to buy. Next to arrive, and seriously underdressed, was Casio’s ...

For my money, Seiko’s best everyday watch isn’t the infamous “Turtle” or one of the myriad 5 Sports. Nope, it’s an obscure 1970s timepiece tied up in dive-watch lore. The 6306-800 Silverwave has a day ...