Designed to thrive in the deep sea, and clean up mighty nice back on land. The Cali Diver Solar runs on the sun with a Japanese solar powered movement. Stamped as ISO-certified, its durable design features our Waterproof Guarantee (10 ATM case + screw-down crown), scratch resistant K1 hardened glass, a dive-safe unidirectional bezel, and Japanese lume dial accents.