AUX (Line-in)
Wired audio input, usually in the form of a standard 3.5mm mini-jack. The
line-in (Aux) input can usually be output from a normal headphone output on a mobile phone or other similar device. And in some models of FM transmitters for linear connection, even their own wire with a 3.5 mm plug can be provided, which eliminates the need to use third-party cables.
Remote control
The presence
of a remote control in the scope of delivery of the FM transmitter.
The ability to control the device from a distance is convenient, first of all, for passengers in the rear seats — for the driver,
the remote control on the steering wheel is more relevant (see below), and the “navigator” in the front seat can easily reach the transmitter itself.
Media support
File formats supported by the FM transmitter.
Almost all models support the MP3 format, which is the most common modern digital audio format. Some devices are also capable of working with WMA — this is also one of the main formats, but for a number of reasons it is used much less often. And even less common is compatibility with WAV — this format provides higher sound quality, but with FM broadcasting this advantage is lost, and the files themselves take up noticeably more space than MP3 and WMA.
Flexible neck
The ability
to change the angle at which the transmitter housing is located relative to the cigarette lighter socket. This function is realized thanks to the swivel plug for the cigarette lighter. It allows you to choose the most optimal position of the device for a specific situation — for example, raise the transmitter if it prevents you from reaching the tray under the cigarette lighter.
