Reliable and effortlessly functional, the Swiss Army Airboss Mach 8 Special Edition 241446 men's wristwatch has it all, including a chronograph with two subdials and a push button that serves as a stopwatch. Users can swim and snorkel without taking this analog watch off in depths of water up to 330 feet. The matte black strap and round dial blend in wonderfully with the attractive stainless steel case, which has a diameter of 45 millimeters and a thickness of 15 millimeters. The sapphire crystal window provides a triple-coating that eliminates glares from the sun so that you can clearly see the digital schedule and calendar. Best of all, the mechanical structure of this automatic watch has a 46-hour power reserve, which gives you plenty of time to replace the battery without losing the time.