The Longitude Collection pays tribute to the years of innovation and scientific thought in solving the problem of how to measure longitude with an exquisite self-winding automatic skeleton watch with a unique moon display. Swiss-made Movement with Moonphase Calendar White Dial with Black Index, Moonphase Quartz, Sapphire Coated Hardened Mineral Lens Croco leather strap, stainless steel case and buckle Water resistant to 165 feet (50 M): suitable for swimming and showering