The Timex Ironman Shock-resistant 30-lap Liquid Watch is a throwback to the original 1986 Ironman watch with improved functionality and shock resistant durability. It has a 100 hour chronograph with lap and split times, and a 30 lap memory recall. The strap is made out of durable resin. This watch also features the INDIGLO night-light with NIGHT-MODE so you can see it in the dark.