inputs.text: exactly says - ive using week really like first fm transmitter cant compare others works really well setup easy like charges well transmits good smartphones poor battery lifemy big negative would liked see shorter option stem plugs car quite long great need means sticks outlet bit would like sometimes gets knocked passenger knee also smaller negative default function rotating dial fm frequency would better volume sometimes dial get knocked thumb advancing song thus knocking sync stereo would rather volume went notch driving vs look retune minor thing might bug peopleoverall really nice economical alternative full mp3bluetooth head unit older vehicles sound quality better expected 20 mile commute rarely adjust tuning found good frequencyi not used calling functions yet no feedback thosewould definitely recommend