I will write a full review shortly suffice to say it is very impressive. The main upgrade from the Ambit2 is the ability to upload sessions via blue tooth paring no matter where you may be. No need to wait to view information as it is transferred in a matter of seconds.
In brief..it records times, distances, locations, intervals, temperature, stroke rate, heart rate, altitude,cadence, It includes compass, mapping, animations etc etc the list goes on and on.
Full review soon.