improvements: 1.Record all your audios into mp3, which can save a lot of space for you! You could only record hours of voice with the old one, but with the new one, you could record hundreds of hours! 2.Seven different options of audio qualities, you could choose a high quality audio to have a better sound, or choose low quality to save much more space. 3.Record audios in background, so that you can do other things while recording. 4.Easy to manage all the audio records. You could play, share, delete and view the detail of the records in a very easy way.