I had received a first model with 2-line display that showed the name of the particular file listened. Following a problem (1.5 jack the audio cable supplied is not suitable in the transmitter input), the seller (Ultimtech) replaced me the product (and paid the postage) against a similar pattern (but LED display much more basic) and with a 2.5 jack input (but still with the cable jack 1.5 / 2.5).
Wedging the 108MHz frequency, I have no problem listening, but beware of FM in saturated regions, which is an inherent problem with this type of product, any way.
With a basic 220V / 12V converter (cigarette lighter), this also makes me act as docking station MP3 player at home.