this unit do everything Garmin say it will do and do it flawlessly . battery draw down time be very exceptable even in cold weather . we have get it soaked with snow and ice . the first day we have it I hide twelve gift in deep wood in a twenty acre area . I set waypoint for each gift and erase my track . even in fast fall , blow , and drift snow my kid where able to navigate to all twelve gift within a hour . what a blast . I strongly recommend add Garmins Mapsource City Navigator for on road adventure . the unit give extremely accurate on road direction -lrb- in print-no voice -rrb- and seem very up to date at least for we area in Wisconsin . I also purchase the optional external antenne for my vehicle , which be perfect . the unit even receive well next to a window without the external antenne , at least in fairly open area . even in severe weather and cloud cover it seem accurate within about twelve foot . I really can not say enough good about this gp . it be slightly more expensive than some of the lesser unit , but WELL worth the cost .