Surprisingly powerful transmitter and great audio quality. Didn't want to shell out a few hundred dollars for the wiring harnesses, adapters and a new stereo for our Trailblazer. This worked great, used it for a road trip this week so we could listen to audio books and music and everything worked flawlessly.

Out of the box it seems relatively cheap, but that doesn't always mean that the item is crappy. I followed the instructions, recorded some videos and was unimpressed with the quality even compared with their keychain model the quality on this pen cam stinks. The battery life is less than an hour of recording time. The biggest turnoff for me is that the light flashes while recording. This is a deal breaker for a "spy camera".