Griffin Evolve Wireless Sound System for iPod Compatibility: iPod mini; iPod nano 1G, 2G, 3G, 4G; iPod classic 4G, 5G, 5.5G, 6G; iPod touch 1G, 2G Rechargeable wireless speakers play your music where you put them, anywhere within 150 feet of the base unit Speakers charge while they sit on the Base Unit and play for up to 10 hours on a single charge Built-in docking station amplifies and charges your iPod during playback 1-Year warranty