Sony AIR-SA20PK S-AirPlay Digital Wireless Speaker System for iPod (Black) Compatibility: iPod mini; iPod nano 1G, 2G, 3G, 4G; iPod classic 4G, 5G, 5.5G, 6G; iPod touch 1G, 2G; iPhone, iPhone 3G, iPhone 3Gs Wireless audio system includes iPod Dock/Transmitter and two wireless speaker systems with LCD display and alarm clock function AM/FM tuner provides alternative to iPod content; multi-zone function means iPod can play in one room while radio plays in another Expandable system is easy to set up, and is compatible with up to ten speakers with the compatible audio receiver Connect to your home AV system with composite audio and video cables for enjoying iPod content