Cell Phone Calls Recorder Voice Playback Dictaphone MP3 Player For iPhone Stand alone, no need install APP on iPhone, record calls in flash memory of device. One key record with Playback, can check the recorded calls on device. Built-in 512MB memory, can record about 500 minutes calls. Can connect to computer with USB cable, to take out recording files, save or edit on computer It can be as MP3 player as well.