The ACCUPLIT Series Stopwatches have been the premier timing piece for elite level sports including Track and Field, Swimming, Baseball and Football. All of these watches are designed on the ACCUSPLIT Operating System (AOS), which is exclusive technology designed by ACCUSPLIT over the last 33 years. The AOS includes One Button Rapid Split/Reset (2 sec.) and No Fail Operating System. The ACCUSPLIT Operating System is designed to give coaches, athletes and timers the most precise timing available. The 740MX includes: * 50 Dual Split Memory * 1-50 One-Button, Fast Finish * No-Fail Memory Review * 30 HR To 1/100 Sec * Start/Stop (Not Time-Out)