Includes: Audio-Technica ATW-RC13 receiver chassis 2x ATW-RU13 receiver units 4x antennas Power supply This is a digital 2.4GHz wireless receiver system. The receiver units can be used in the chassis or removed for remote mounting with Ethernet cable. Used condition with some marks/scuffs to the casing from normal use. Please note: no handheld microphones or beltpack transmitters included. Ideal for someone who already has compatible Audio-Technica System 10 Pro transmitters or needs spare receiver units. Please check all photos carefully.