The Geartist GB01 is a low cost Bluetooth device that can transmit music or calls to be played over a car stereo system.
It has a magnetic base that sticks to your dashboard via a sticky pad.
The sticky pad is set strategically in the best location as a holder. The GB01 can attach and detach from it as needed magnetically.
As with all FM transmitters a empty frequency on the FM radio is found and both the device and radio set to the same FM channel.
Once both are set to a empty FM station the GB01 will transmit sound over the cars speakers.
The next step is to pair it to a Bluetooth smartphone or a Bluetooth music player such as a iPod.
Paring is easy to do by going into Bluetooth settings and click Pair.
It comes with a two port USB adapter that plugs into the cigarette lighter.
The USB ports have a 1 Amp and 2 Amp port. The Geartist GB01 unit can plug into either port with an extra for charging other devices. It is likely best to leave it in the one amp port and leave the two amp port for charging other things.
A nice feature for iPhone users is its ability to work with Siri along with voice activation.
Summary
Overall the Geartist GB01 is a not a bad unit for the money and does what it was built for. There are more expensive better FM kits if you need a high quality unit.
As with all FM transmitters if you live in a big city or travel a lot FM radio stations will creep into the unused frequency which makes them not work.
There is not a lot that can be done about this. Some users of FM transmitters remove their car antenna as to not get rouge radio stations interfering.
If you live in a small town than you will not have this issue. If you do live in a big city than getting to know the unused frequencies is a must.
Overall FM transmitters while not perfect are well worth it for cars that dont have Bluetooth built in to the stereo.