This is an accessory that allows you to watch terrestrial digital TV on your iPhone. I'm selling it because I haven't used it much. The main unit only, no manual included. You should be able to get it working by installing the app and plugging it in, so there shouldn't be any confusion. Please note that it's a Lightning connector, so it only works with iPhones up to the iPhone 14. I will ship it via Nekopos (a Japanese delivery service). Lightning-connected, retractable antenna terrestrial digital TV tuner - Model: XIT-STK200 - Connector: Lightning - Antenna: Retractable antenna - Brand: Xit Thank you for looking.