Pros:　
Very good and fast.

Cons:　
Very good and fast.

Pros:　
It is very useful for me when i holiday, or drive on night. So if i am feel sleepy i can take a rest a moment in some place

Cons:　
None

Other Thoughts or Suggestions:
Useful goods

Pros:　
I will use this when I drive to far far places the next time I go on a holiday!!!

Cons:　
Nil

Other Thoughts or Suggestions:
Useful product!

Pros:　
Ótimo produto
Bom acabamento
Cumpre sua função
Tem uma boa altura de alerta

Cons:　
Tem que ter uma grande inclinação para que apite

Photos related to this item:

Pros:　
The battery lasts and its use is very comfortable.

Cons:　
cons:
The sound is a little low in my view, however is quite cumbersome.

Other Thoughts or Suggestions:
I liked the product, it is triggered by the slope of the driver's head.
The delivery occurred within the period reported.
The low price pleased me