The Szanto HLA Dive Watch is the official watch of the Hawaiian Lifeguard Association made to be tough & reliable. Easy to read the faces are simple with no complications & the important features have superior lume which glows brightly in the dark. 43mm 316L Brushed Stainless Steel Case Unidirectional Rotating Timing Bezel Screw Down Locking Crown Screw Case Back Superior Lume on Hands & Dial Numbers Multi-jewel Japanese Quartz Movement K1 Hardened Mineral Crystal NBR Rubber Strap with patterned back 200 Meters Water Resistant Face diameter 33mm Face + Bezel diameter 43mm