inputs.text: not usable noisy car no aux input radio stick shift - product easy set reasonably inexpensive use fm transmitter testing car parked driveway worked fine turned volume device radio however noisy car even devices volume set maximum value sound incoming call soft usable increase volume radio volume coming speaker lot softer playing fm radio station would liked tried option connecting cable device radio radio not \\aux\\ input another thing aware manual transmition \\cigarette lighter\\ close stick knock device enough move microphone caller no longer hear even knock device socket effectively ending call although think good device works well many situations not usable