A Question of Equipment

A brief question:

Can anyone suggest or have recommendations for the following item.

I am looking for an arm/chest band which will not only keep track of my heart rate but also allow me to preprogram split times i.e. thirty seconds sixty seconds so that I can accurately pace my workout. It would be great if it came with a prefab program that would keep track of my heart rate so I could compare it to my program and see where I need to adjust rest periods and reps to maintain my target…any help would be awesome guys. THANKS MOBY