ACCUSPLIT AE760M100FY Professional Stopwatch, 100 Memory (Yellow) 30-hour timing range stopwatch with dual-split (cumulative and lap) timing Includes 100-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