The Longines Heritage Diver is a modern version of an old-school diving watch from the 70s. Just like the original, it's a sizable 43mm. It boasts a chronograph function with a L651.3 movement, displaying hours, minutes, and seconds. Plus, it has a 60-second counter at 3 o'clock and a 30-minute counter at 9 o'clock. Don't forget the date at 6 o'clock! The black dial has a sleek satin finish, and the cool crown at 10 o'clock operates the rotating inner flange. This feature is great for calculating remaining dive time, so you can safely resurface. And it looks sharp on a black rubber strap.