Watches from Seiko are known for their durability. Their designs and the tough materials used in their construction make them ideal for active lifestyles. The Seiko Prospex Diver is no different. It has a stainless steel casing with a super hard coating that allows it to stand up to harsh conditions. This water-resistant watch isn’t just tough, though, as its user-friendly design and sleek lines make it a piece that truly leaves an impression. The Prospex Diver Automatic boasts the ISO 6425 watermark, indicating that is certified to function up to 300 meters underwater.