I really dont know wish I had an answer for you. I will tell you this thing is AWSOME!! I use it every day for work,I was using a go pro before this but that was really big & bulky. My opinion this is just as good if not better! I only wish it could handle a bigger memory card than an 8gb.
The new Muvi Pro features FRE Technology (up to 30 frames per second), date/time stamp and increased sized 4GB Card. The Non-Pro model has a frame rate of 20-25 fps and no date/time stamp and 2GB SD card. You can get about 45mins per 1GB, but unit has about 2 hours of record time per charge.