Automatic Movement 5 microns-23k of polished gold plated case Stainless Steel Case Genuine Leather Strap (8.5") Water Resistant up to 50 meters 35 Jewels. Month Dial Display Day Dial Display Calendar Window Tachometer Case: diameter 1.5"; 5 microns - 23K of polished gold plated bezel and armatures; brushed finish sides Case back: 5 microns - 23K of polished gold, windowed, skeleton screw back Glass: high impact, scratch resistant mineral crystal Crown: gold plated, ridged screw down pins Bracelet: 8.25L" x .75W" interchangeable black and brown aniline dyed leather wristbands Clasps: gold plated hook clasp, rods, strap lugs and sprung pivots Movement: mechanical automatic self winding; 35 jewels Dial: diameter 1.25"; ivory enamel face with black roman numerals Sub-dials: 2 calendar apertures display day, month, year, AM/PM with stars/sun graphic and 1 numerical month flip dial Voyager window: opening with Nautilus-bridge and spring loaded flywheel for view into movement from face Hands: sweep second, minute and hour Water resistant: to 5ATM (50 meters) Weight: 1.06 oz Steinhausen knew there was only one real way to witness the power of the most accurate automatic movement on earth. Built on the chassis of the watch that made history with the same brushed stainless steel case and polished crown, Steinhausen merely added a window a few years later. The transformation was so great that Steinhausen decided to name it the Voyager. The small window in the face allowed the wearer to peer into a world where a 185 tiny precision parts beat as one. 185 parts assembled entirely by hand. A claim that very few watch companies can make.