I have be mean to get this product for a while and I use to borrow my friend 's all the time which be exactly the same model so I know I 'll like this one . the packaging be nice and everything come in the box be new . it be just the right size to attach to the windshield -lrb- or wherever -rrb- and it seem to endure heat very well too since I have have to use it a couple of time in extremely hot weather and the gp be pretty much `` boil '' after the car would be park in the lot for a while . I also like the recalculate function very much .