Radio Sync Solar Dual Time Radio-controlled: Automatically receives radio signals to precisely adjust the time and calendar Powered by light energy- no battery change required Signal reception and result indicator World time function (25 time zones) Dual time function 6-month power reserve Power save function Date calendar Retrograde day display LumiBrite hands and markers Screwdown crown Glass caseback Sapphire crystal Case diameter: 44.5mm Stainless steel case and bracelet Cabochon crown Water-resistant to 10 bar, 100 meters (330 feet) Caliber 8B63
