The term "extra features" refers to additional elements or components that are included in a product, service, or experience beyond what is considered standard or expected. These extras can vary widely depending on the context and may include anything from bonus content on a DVD or Blu-ray disc, to special offers or promotions, to advanced technology or design features in a device or appliance. In general, "extra features" are meant to enhance the overall value of the product or experience by providing additional functionality, convenience, or entertainment.