I occasionally use this Plotter qqs from me, my gripe that battery after 24 hours is empty. Otherwise, a very good product, although it reacts with some delay for sending SMS when the vehicle position. Very useful in my field, for cheap it makes me good service, it makes for what I bought, provided you change the battery every day. Fortunately it comes with two batteries (batteries). Satellite reception issue, deep in my garage, in a car, do not even think about it, outside, no worries. In sum, a product recommended and inexpensive. There are certainly better but more expensive .....
