Installation instruction is NOT included. Professional installation is highly recommended.Also, the each additional item means. The the same color and size. Transit time may be a little delayed because of the. If you have any questions. This item is in the category "Vehicle Parts & Accessories\Car Parts & Accessories\Advanced Driver Assistance Systems\Parking Assistance\Parking Cameras". The seller is "2011-betterlife" and is located in this country: CN. This item can be shipped worldwide.