Not sure if this is the functionality you need, but I use a timex ironman triathlon WR 100. I can check on split times while it is still running, save individual sessions up to 100 total splits. It also has a timer and interval timer. I coach some good middle distance runners, and at a meet I can get all their splits for all their races on my watch, save them, then review them all at the end of the day to be recorded. I can delete the race splits I’m done with, and leave the races I want.
I don’t know if this is the exact model, but pretty close:
http://www.timex.ca/IRONMAN-TRIATHLON-100-Lap-with-FLIX--P80.aspx