"ELECTROLUMINESCENT; WATERPROOF TO A MAX. DEPTH OF 6 FT. FOR 1 HR.; OPERATIONAL TEMPERATURE MINUS 40 TO 80 DEG. CELSIUS; WHITE FACE, BLACK NUMBERS, YELLOW AND RED WARNING SECTOR; READS IN FT. OR METERS; COMES WITH A VELCRO WRIST MOUNT; BUILT-IN SLOT FOR CHEMICAL LIGHT STICK FOR BACK-UP LIGHTING"