The Leatherback Sea Turtle Giant 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. With a 44mm case and water resistance up to 100 meters, its black dial with white numbers provides maximum readability during the day. At night, the proven Luminox Light Technology lighting system assumes this function. Its self-powered for up to 25 years.