Assuming you mean a Visor Lite, their only downfall if you could call it that is if you don't have a sun-visor handy. Sounds daft I know but I use on in the car with great success but in a truck the visor is too far away and the background noise of the truck and the road makes it difficult to listen to. If you're after one for a car I'd highly recommend a Visor-Lite. Battery lasts forever between charges, something like 15 hours talk and 800 hours on stand-by, takes 3 hours to charge from flat in vehicle. They don't come with a mains charger. Hope this helps