I am still in shock by the shear amount of Physics and maths in this technique, so much study still to do! How there can be such a price difference between countries, and if it is so expensive why not have it 24 hrs. Just so much to study! This is evidently just the start of exploring this topic. I am a little put off by the number of articles that do not really understand what is going on. MP4 recording     MP3 recording -- -- Your browser does not support the audio element.