JBL On Tour Plus Portable Speaker System Personal speaker system for MP3 players, game systems, personal CD players, and more Odyssey aluminum-dome transducers deliver rich, full-bodied frequency response Computer-optimized equalization and advanced energy management system Stereo mini-jack connection; includes rugged carrying case for traveling Measures 7 x 1.4 x 3.5 inches (W x H x D); 1-year warranty