90000 SportCount Chrono 100 The Chrono 100 model is best for coaches, serious athletes, and racers who need to record multiple lap times. Great for marathon runners, triathletes, and for those among you who wish to make sure lap by lap that you`re still the best. We think you are. Recall up to 100 individual lap times Recall fastest, slowest, average, and total lap times Display split times and lap numbers Total number of laps completed & total lap time Water resistant to 50 meters