favorite music with fullness and clarity in a design even slimmer than Bose's original concept. Proprietary Bose technologies, including waveguide speaker technology, let you enjoy your iPod out loud in more locations without compromising sound quality.The SoundDock Portable's rotating dock disappears for storage and protection during transit and a molded handle makes it easy to carry the system from place to place. Once you've reached your destination, just dock and play your compatible iPod. The iPod charges as it plays through the speakers for uninterrupted music enjoyment, and the included rechargeable lithium-ion battery provides more power and longer playing time than most other rechargeable batteries. A custom remote easily controls the system and basic iPod functions. Auxiliary input lets you play other portable sources, too. The follow iPod models are compatible with SoundDock Portable: •touch: 8GB, 16GB, 32GB; all software versions •classic 80GB, 160GB; software: 1.0.3 & later •5th gen (video) 30GB, 60GB, 80GB; all software versions •4th gen (color display/photo) 20GB, 30GB, 40GB, 60GB; software 1.0 & later •4th gen (monochrome display) 20GB, 40GB 3.0 & later software •nano 3rd gen (video) 4GB, 8GB; software 1.0.3 & later •nano 1st & 2nd gen 1GB, 2GB,4GB, 8GB; all software versions •mini 1st & 2nd gen 4GB, 6GB; software: 1.2 & later(Check Apple's website for software upgrades if necessary)The following models are not compatible with SoundDock Portable: •iPhone 4GB, 8GB, 16GB •2nd gen (touch wheel) 10GB, 20GB •1st gen (scroll wheel) 5GB, 10GB •shuffle 2nd gen 1GB •shuffle 1st gen 512MB, 1GB  (less)