Eleven Engineering's product line provides designers, developers, and manufacturers with rock-solid, mass-production-ready modules and SiPs ("System in Package") for a wide range of wireless audio applications. Eleven's mission is to ship wireless audio solutions with industry-best Quality of Service (reliability) and Coexistence (friendliness to other wireless devices) while continually improving ease of integration, features and audio quality. Eleven works very closely with its customers through the module integration process to ensure that the customer's final product achieves success. As a result, retail return rates for Eleven's customers' wireless audio products are often lower than those of comparable wired products.