Performance: How consistently and well a product functions
Aesthetics: The appearance of tangible products (style, beauty)
Serviceability: Measures the ease of maintaining and/or repairing the product
Features: Characteristics of a product that differentiate functionally similar products
Reliability: The probability that the product or service will perform its intended function for a specified
Durability: The length of time a product functions.
Quality of conformance: A measure of how a product meets its specification.
Fitness for use: The sustainability of product for carrying out its advertised function.