AOS 4.5 Operating System with 16 dual split memory. Has split counter, 1-button rapid split & reset, 1-2 fast finish, and event timing. 10-hour timing range. Twin left-right button operation. Million Cycle No Fail Switches. CR2032 5-year battery life. New breakaway safety lanyard. Shock & Water-resistant (30m/100'). Fall-safe reset. 5-year DUAL No Proof of Purchase Limited Warranty.
