The compact design of the JBL Sirius Receiver fits neatly out of the way. Specifically engineered to only work with JBL Sirius-ready radios (JBL MR-6S, MR-17S/W, MR-32S, MR-18, and MBB-218). Two-wire hookup. Comes with 6" data cable. 5-1/8"W x 1-1/8"H x 3-3/16"D. This Sirius package includes a 6-month Sirius subscription.