ACCUSPLIT A740MXT Professional Stopwatch, 50 Memory 30-hour timing range stopwatch with dual-split (cumulative and lap) timing Includes 30-event memory, 1-2 fast finish, split counter, average-split compute, and lap and total speed rate Uses the exclusive ACCUSPLIT Operating System (AOS) 1.5-year battery life with low-battery indicator, and water resistant up to 30 meters Five-year, no-proof-of-purchase warranty