execellent easy to use device with lot of option . also the unit 's graffic be fun and cute . it take AA battery so it be not difficult to power . it also have a car adapter that you can purchase , but I do not recomend use it in a car since it do not have map software build in . it seem more for explore by foot or watercraft .  the product seem well make , and easy to find if you drop it . it also be supposidly waterproof .  the manual be a easy read , and there be a pamphlet that come with it that allow you to jump right in without know too much .  i pick this item up because it be recommen on the gecaching website as be a good value .