The Luminox Sport Timer is water resistant to 200 meters and has a sapphire crystal. With a 42 mm stainless steel case, a screwed crown and a screwed case back, this automatic model is robust and versatile. The stainless steel bracelet gives the watch the finishing touch. Replacement Strap FMX.2405.ST.K Manual GGM.L002.GMT 2 Year Limited Warranty 10 Year Warranty for Tritium Tubes