Few watches have a following as broad as the Seiko 5. Collectors respect it. Beginners start with it. And most people who buy one end up keeping it for life. With prices starting as low as $315, you ...

There are plenty of watches that promise adventure—and then there’s the Seiko Turtle. First launched in 1976, this softly curved, cushion-cased diver has survived everything from Pacific salt water to ...