The iW3 is an AirPlay wireless speaker system that uses your Wi-Fi network to connect and control your iTunes library (Mac + PC) for wireless audio anywhere in the home. Rechargeable Lithium-ion battery for portable placement. The iW3 alsosupports USB for charging and music playback of iPad, iPhone and iPod with any iPod USB sync cable. Modest size and affordability make this an ideal solution for multiple room placement. Embrace wireless living with impressive technology and an exceptional audio experience.