I've been using this for about a year. There is no instruction manual. The accessories are as shown in the photos. The cartridge is not genuine, but it has been used for about a month, so I think it can be used for another two months. This is a high-quality shower head that provides a comfortable shower experience. - Brand: ReFa - Product Name: Shower Head - Accessories: Adapter - Filter: Replacement filter Thank you for looking.