Large display car navigation system, equipped with volume adjustment and map functions. There were no particular operational concerns before removal. Several months have passed since removal, so no guarantees can be made. The buyer is responsible for repairs in the event of any defects after purchase. Please note that due to the nature of the item, no warranty or exchange is offered. This electronic device is considered a junk item. The main unit only. I do not know if an SD card is included. Also, I am a novice and cannot confirm. - Model: NSLN-W68 - Functions: Car navigation - Buttons: Volume adjustment, Menu, Audio, Map Thank you for viewing.