... multi-audio systems:IB/GD/KM/NAV input:one way.Audio input:two ways.Play DVD/USB flash driver ... must sign in aliexpress and confirm order received within 7 days, if you don't agreed with it, ... If the item is defective, please notify us within 7 days. The damage caused by rough transport and handling ... broken, scratched and so on. Items returned after 7 days of delivery are only eligible for repair.we ...