This weather resistant, wireless speaker lets you enjoy rich multi-directional stereo sound anywhere. The system has a broadcast range of up to 350 feet,. Listen to any MP3 player, iPod, computer, home theater, audio system, or your TV by choosing either the iCast transmitter which is included in this kit, or the UAT which is sold separately. The OutCast Jr. system includes an iCast transmitter, rechargeable battery, a 12 volt adapter cable, power cord for direct connection to any outlet, and a 3.5mm line input for direct play. The NiMH battery allows for 5-9 hours of uninterrupted play when properly charged. INCLUDES : iCast Transmitter with "Works with iPhone" approvals.