Seiko Prospex "Street Tuna" Solar Diver - SNE563This rugged Prospex Grey Tuna Solar Diver is built to respond to your active lifestyle. The hefty 47 mm case and unidirectional bezel give your wrist a commanding presence, while the solar powered movement runs for up to 10 months on a full charge without the need for battery changes. The grey silicone strap molds to your wrist during long days, and with 200 m water resistance and screw down crown, it stays ready whether you're hitting the waves or