Robic SC-899 540 Memory Triple Timer Single timer tracks up to 3 events: time one, two or three events or participants at once...with a single timer...your choice More results than ever before: the SC-899 has three (3) Fully loaded time keeping modes: Set it up exactly the way you want: you can choose from 1, 2 or 3 competitors at once. Start the timers at the same time or separately A powerful and versatile training timer: on demand 180 memory recall of up to 3 timers, up to 1000 readings. View the memory recall in ascending (1, 2, 3.) or descending (.3, 2, 1) order Easy to use and loaded with features: use the memory while the timer is running, so you can immediately take another reading without changing modes