Thank you for viewing. I am selling this item because I stopped using it after purchasing it new. This device is a GPS receiver that connects via Bluetooth. It is compatible with iOS/Android devices and enhances GPS accuracy when connected. Also, Wi-Fi-only iPads (which lack GPS) can obtain location information even when used outdoors. Manual: https://www.itabnav.fr/docs/GNS_2000_Manual.pdf In preparation for listing, I have confirmed outdoor positioning and continuous operation for several hours. Operation has been confirmed on an iPad Pro (2018). In addition to the main unit, a USB charging cable and a pouch are included. There are scratches and dirt associated with use. Please check the product photos. I will perform a simple cleaning, but it is impossible to completely remove dirt and dust as it is a used item, so please consider purchasing with that in mind.