Take things up a notch with this Super Titanium? CITIZEN Brycen timepiece. Includes a 1/20 second chronograph up to 60 minutes, 12/24 hour time, perpetual calendar, dual time, tachymeter, date and alarm. The Super Titanium? case with a luxurious black leather strap with contrast stitching and dark grey dial. Featuring our Eco-Drive technology ? powered by light, any light. Never needs a battery. Caliber number E820.