Sunroadway&reg; Bluetooth Microphone Mic for KENWOOD DDX371 DDX471HD DDX491HD DDX5901HD DDX7701HD DDX771 DDX8901HD DPX500BT KDC-BT355U Wire Length: 4 M , Please note: Some radios require a bluetooth adapter to use any microphone (not included in this auction) Will fit : KENWOOD DDX371 DDX471HD DDX491HD DDX5901HD DDX7701HD DDX771 DDX8901HD DPX500BT KDC-BT355U