this incredible gadget have so many feature it make you feel like you be a member of the Enterprise crew . it also have enough menu and screen to leave even hardcore electronic gadget junkie satisfied . yet , it have one shortcoming - it do not work half the time under real life condition . perhaps if you be in a open desert or a similar terrain it be reliable , but even with light tree cover -lrb- 20-25 % -rrb- or hill nearby it sadly report `` weak signal '' and can not calculate you position . to I , all the other feature be a icing on the cake , but without be able to fulfill its primary mission , it become but a expensive electronic paperweight .