Mechanical watch with a 46-hour power reserve, featuring a Swiss-made skeletonized Unitas-type movement. A descendant of the Unitas-type movements, but with a frequency of 21,600 vibrations per hour. Brushed steel case , visible screw-down case back Water-resistant to 3 atm Luminous hands Screw-down case back , 42 mm diameter , 10 mm thick Option Aviator-style leather strap with white stitching. Hand-wound movement , 46-hour power reserve , 21,600 vibrations per hour Watch comes with a two-year warranty covering parts and labor.