iTrip Auto Universal Plus-We call this one "auto" because it gets its power from your vehicle"s 12 Volt accessory outlet. And we call it "universal" because it works with any portable audio device that has a standard 1/8" headphone jack (including CDs, MP3s, cassettes, and yes, even iPod). Additionally, the "Plus" in this iTrip model is the ability to charge your player by means of a built-in USB port. Plug in your player"s USB charge/sync cable, and you get to listen to your tunes while you"re traveling, and arrive with a fully-charged player. PowerBlock Universal-Plug your charging cable directly into PowerBlock"s Type-A USB socket. Flat-blade non-polarized prongs fit almost any AC outlet, from 100V to 240V, to deliver safe, uniform power levels to any USB-chargeable device, including your iPod. Compact and lightweight for business and other travel -- just toss PowerBlock into your luggage or backpack.Charge/Sync Cable -Can also be used with Griffinâ?TMs PowerBlock® and PowerJolt iPod power products as an extra charging cable for in the car, at the office or anywhere else.USB connects with your Mac or PC as well as a growing number of power products for iPod that use USB to charge. The Dock Connector links your 4th generation or later iPod to your PC or Mac to keep your tunes, pictures and video synced Carry an extra in your bag or backpack to charge and sync on the go.California Roll-This free-form case is flexible - literally. Stash your stuff in California Roll"s pockets, then roll it up and secure it with its own built-in elastic band for carrying. Holds your iPod as well as all your iPod goodies. Maybe even your non-iPod goodies. You could probably even carry your chopsticks in there.