Good product with a good price / quality ratio

Positives:
- Possible use without being necessarily connected to the cigarette lighter with a good autonomy,
- Covers all radio frequency allowing to lock without being bothered by interference,
- The charging of the device (cigarette lighter) also adapts to recharge smartphones so no need to always have its charging cable with self and ability to simultaneously charge two phones because the camera charger equipped, in addition, a USB socket.

Negative points:
- In some places (especially large cities), it is sometimes difficult to find an available frequency to be able to listen to their music without interference,
- We must put the volume really loud car radio to reach an audible sound.