Need a Racing Lap Timer? The AiM MultiChron Stopwatch is For You! The AiM MultiChron stopwatch is a digital racing lap timer that is versatile, well built, attractive and easy to use. Capable of recording lap times for up to four racers at a time, the AiM MultiChron stopwatch is an ideal racing lap timer for not only karting and auto racing, but all racing sports, such as swimming or track and field. The built-in memory allows the user to quickly access best lap times as well as review up to 99 lap time recordings for each of the four selected racers. The MulitChron stopwatch also allows the user to make up to 9 splits per lap for each competitor so that he or she can have comprehensive data recordings for later analysis.