From Seiko, the Men's Prospex Solar Hybrid Diver Black Silicone Strap Watch features:  Modern interpretation of the 1982 Hybrid Diver's Watch Silicone strap Buckle closure Lightweight matte black case Screwdown crown, pushers, and caseback Black dial Black one-way rotating elapsed timing bezel Solar diver Powered by light energy-no battery change required 6-month power reserve once fully charged Analogue and digital displays Power reserve display function Local time indication mode Stopwatch function Alarm LumiBrite hands and markers Case diameter approx. 47.8mm Water Resistance: Up to 200 meters (660 feet) Diver's watch Follows ISO standards and is suitable for scuba diving Imported.