Ratio Freediver Professional Sapphire Black Dial Automatic Rtf009 500m Men's Watch

Features: stainless steel case black silicone strap with stainless steel buckle automatic movement caliber: miyota 8215 21 jewels vibrations per hour: 21,600 bph shock system: parashock unidirectional bezel sapphire crystal with antireflective coating black dial analog display 40 hours power reserve luminous hands and markers date window at 3 o’clock screw engraved crown engraved caseback (with image of a free diver) buckle clasp 500m water resistance this watch is pressure tested approximate case diameter: 42mm approximate case thickness: 15.65mm approximate lug width: 20mm