The model distinguishes between three types of functions: basics, performance functions, and delighters. Let’s use a mobile phone to understand how the Kano Model works. Basic functions of a mobile phone include switching the phone on and off; making and receiving calls; and composing, sending, receiving, and reading text messages. These rudimentary functions are necessary to sell a product but quickly cause customer satisfaction to stagnate. For instance, adding another button to switch the phone on and off would not add any value. Failing to provide a basic function usually renders the product useless. Performance functions lead to a linear increase in satisfaction. They follow the principle “The more, the better.” For instance, the lighter the phone is and the more quickly it starts up, the more satisfied customers tend to be with it. Customers cannot get enough of performance requirements. They are not sufficient, though, to differentiate the product in the marketplace. Delighters, as the name suggests, delight and excite customers. An attractive product design and the ability to personalize the phone are examples of delighters. Delighters can be related to latent and hidden customer needs—needs customers were not aware of. They are those product functions that provide a competitive advantage and a unique selling proposition.