Make lasting impression with the rugged stainless steel black ion plated watch with carbon fiber dial accents. The mix of materials on this 1/5 second chrono measuring up to 60 minutes with 12/24 hour time, date, one-way rotating bezel, 44 mm screw-back case, luminous hands and markers, and 200M WR creates a unique experience. Featuring our Eco-Drive technology – powered by light, any light. Never needs a battery. Caliber number B612.