The iHome iDM12 Rechargeable Portable Bluetooth Speaker System lets you wirelessly stream music from a Bluetooth-enabled iPad, iPod, iPhone, PDA, smartphone, computer, etc. The speaker system has a transmission range of up to 30' and an auxiliary input for listening to music from non-Bluetooth devices including alternate MP3 players, CD players and radios. The iDM12 features two active speaker drivers and one passive radiator, which deliver extra bass and exceptional clarity due to iHome's SRS TruBass digital sound processing technology. For protection during transport, the system includes a cover that attaches magnetically to the speakers. The cover was also designed to work as a stand for your first generation iPad, iPad 2 or iPhone. The iDM12 also has a dual-color LED charging/pairing indicator light and is powered by a built-in lithium-ion rechargeable battery that affords ultra-portability, allowing the speaker system to travel anywhere with your phone or iPad.