Luminox Watch Master Series Bear Grylls Survival XB.3741. The MASTER Series features two chronographs in 45mm CARBONOX cases with orange details on the case, including SOS in Morse code for quick reference. The pushers of the chronograph are in solid stainless steel, while the stainless steel crown has an orange rubber crown ring for easy grip. This special timepiece is water resistant to 300 meters and has a sapphire crystal with anti reflective coating. It comes on a black rubber strap and fitted with a compass already assembled to the strap.