RCA RC970 Wireless Stereo Speaker System (Pair) (Discontinued by Manufacturer) Pair of wireless stereo speakers with 3-channel transmitter and 6-foot audio cable Ideal as cable-free rear surround sound speakers; separate bass and treble controls 5-inch woofer and 2-inch tweeter per speaker; 20 Hz to 14 kHz frequency response Connects directly to portable audio devices through RCA, wire clamp, or 3.5 mm jacks Each speaker measures 12 x 17 x 18 inches; 90-day warranty