This perpetual calendar chronographis loaded with features including a 1/20 second chronograph measuring up to 60 minutes, 12/24 hour time, dual time, date, alarm, and luminous hands. The 44mm stainless steel case is complemented by a brown leather strap with white contrast stitching. Also includes a screw-back case and 100M WR. Featuring our Eco-Drive technology – powered by light, any light. Never needs a battery. Caliber number E820.