The Pioneer Spirit Lives On Historically, Longines has accompanied legendary pioneers as they conquer air, land and sea. Today, the winged hourglass brand has drawn inspiration from this heritage to create Longines Spirit, a collection with an impeccable pedigree. CASE Shape: Round Material: Stainless steel and ceramic bezel Glass: Scratch-resistant sapphire crystal, with several layers of anti-reflective coating on both sides Case Back: Transparent case back with sapphire crystal Dimension: Ø 42.00 mm Lug distance: 22 mm Thickness: 17.00 mm Water Resistance: Water-resistant to 10 bar Weight: 127.7 g Case Specificities: Bi-directional rotating bezel, Screw-in crown DIAL & HANDS Dial color: Sunray black Hour markers: Applied Arabic numerals Hands: PVD Bronze color hands Specificities: Swiss Super-LumiNova® MOVEMENT & FUNCTIONS Movement Type: Automatic Functions: Hours, minutes, small seconds at 9 o'clock Caliber: L791 Movement Description: Self winding mechanical movement beating at 28'800 vibrations per hour, with a monocrystalline silicon balance-spring power reserve up to 68 hours Chronograph: Flyback Chronograph Functions: Central 60 seconds hand and 30 minutes counter at 3 o'clock Magnetic resistant: Yes STRAP Bracelet/Strap: Strap Material: Leather strap Color: Brown Buckle: With double security folding clasp with micro adjustment system Interchangeability: Easily change your bracelet/strap thanks to the Longines interchangeable system REF: L3.821.4.53.2