Got it yesterday. First, some features:
-0.5 MHZ increment tuning, covering the entire FM band
-Runs on 2x AA batteries or DC power
-Adjustable input level
-My favorite feature - has a red/green LED light that flickers green when the audio level approaches clipping and flickers red when it clips. So you can turn down the input level to the point just below getting red flashes, thus maximizing output level
Now, my thoughts. Out of the box this thing sucks big time. Solid range is about 4 feet, and outside of 10 feet the signal is gone. HOWEVER, there's a well-known mod. Remove the 3 screws holding it together and pop off the cover, and easily accessible is a tuning pot that adjusts output power. Moving it just a bit expanded my solid signal range to about 50 feet and it easily covered my house. Sound quality is EXCELLENT (far better than an old analog unit I own) and while the sound level is somewhat lower than braodcast FM even when turned to the highest possible level without clipping, it still sounds great.
Just out of curiosity, I wondered what kind of range this was capable of. I replaced the stock antenna with a 36-inch telescoping antenna and cranked the output power to the max. Put it in the upstairs of my house near a window and took a drive in my car. City-grade range was roughly 800 feet and the furthest point I picked up at least a trace of signal was at about 2/3 of a mile.
I ultimately put back on the stock antenna and set the power to comfortably cover my house without it going much further. Bottom line is this is an excellent FM transmitter.
![Image](https://images-na.ssl-images-amazon.com/images/I/61lCfvn4k1L._SL1000_.jpg)