Carelove 7" 790 Car GPS Navigation 8G Touch Screen Pre-installed North America Maps Lifetime Free Map UpdateVery Important Information At Product Description Read It Before Order.Turn By Turn Navigation Operation System : Excellent In Receiving Signal Targeted Hign-sensitivity receiver module . average error within 2-5 meters. Built-in 8GB ROM,800*480 TFT LCD Touch Screen,Comfortable user interface, simple, easy to operate. Do Not Use Computer To Charge The GPS As It Can not Provide The Appropriate Voltage .Professional Navigation Program. We Update Maps Twice A Year On Our Website.12 months warranty . Easy To Navigate,U.S.and Canadian Map are preloaded. The System Can Caculate A Best Route Afer Setting The Destination And The USA Maps Preloaded, Hign Functional Muiltmedia Player . Support a lot of format Spoken Turn By Turn Directions, Friendly Warning When Your Are Speeding Or When a Traffic Camera Is Coming.