DLC coated stainless steel automatic with chronograph, annual calendar, big date, round, 30 atm, dial: black with black sub dials arabic, rubber strap Metal Type: DLC coated stainless steel Case Size: 41 mm Movement: automatic Function: hour, minutes, chronograph, annual calendar, big date Water Resistant: 30 m Bracelet: rubber Buckle: DLC coated stainless steel folding clasp