Oregon Scientific WRS368 Music Sphere Wireless Speaker with Transmitter Portable wireless speaker and transmitter for iPods, MP3 players, CD players, TVs, stereos, and more Advanced 2.4 GHz frequency-hopping spread spectrum technology transmits wireless audio up to 100 feet 3-speaker array (2 tweeters and a subwoofer) in high-quality acoustic chamber delivers crystal-clear sound Connects to 3 audio sources at once; sources' remote controls work through speaker; 3-color LCD display Speaker measures 8 x 7.4 x 7.7 inches (W x H x D); transmitter measures 4.5 x 4.2 x 4.5 inches; 1-year warranty