Prior to purchasing this product, I was a long-time user of the digital Belkin FM Transmitter w/my Dell DJ30. When the Belkin transmitter went belly-up on me, I was going to purchase another one, but read the reviews about the iRiver transmitter. Decided to give it a try and I am very happy with the quality and the fact that I don't have to use batteries in the transmitter. The only thing that would have improved the iRiver transmitter for me is if it rotated someway so that the channel display and buttons were at the top since the cigarette lighter in my Jeep is at the same level as the gear shift, making it difficult to search for a clear channel when driving. Other than that, I'm a happy user.