Recommended Uses For Product Karaoke Brand Audio-Technica Connectivity Technology RF Connector Type Wireless (RF) Special Feature Wireless With a 2 x 4 channel frequency plan for enhanced flexibility, sturdy but stylish build quality and a simple user interface, AT-One is ready to become your perfect wireless companion AT-One is designed with simplicity and ease-of-use in mind Equipped with a practical carrying case, rack-mount kit and detachable antennae, AT-One is the perfect balance of price and performance, ideal for those looking for accurate, reliable performance at an entry level price The AT-One’s frequency plan is divided into two groups with 4 available channels in each group split between the Europe wide license free frequency range and the LTE duplex gap. Users can choose up to 4 channels within one group 3 YEAR WARRANTY : With over 50 years of Japanese Innovation and Quality behind it, this comes with a 3 year warranty from Audio-Technica that covers manufacturing defects.