The Leatherback Sea Turtle watch gets its name from the design of the watch, the classic Luminox case with the protected crown balanced by an opposite outcropping, resembles the shape of a turtle. Featuring a 39 mm CARBONOX™ case and water resistance up to 100 meters, this black-in-black dial is equipped with the proven Luminox Light Technology lighting system. "Always Visible", self-powered, for up to 25 years.