After-sales; after receiving the goods, there is a one-year warranty and a lifetime quality warranty, please rest assured to buy, you can contact us if you have any questions. The stand must be attached to the instrument for a complete and most important view of safety while charging the phone, solving phone battery issues. Without installation instructions, but with installation picture in the pictures, without any modification, easy to assemble, can be completed within 5 minutes, very simple and fast, if you need install video, please contact us.. Please don't make order if your phone screen size bigger than 5,85 inches/7.88cm . For BWM K1600B 2014-2020 For BWM K1600GT 2014-2020 For BWM K1600GTL 2014-2020.