From the Manufacturer
What's in the Box
Griffin iTrip Auto Universal and owner's manual.
The iTrip is called "auto" because it gets its power from your vehicle's 12 Volt accessoryoutlet. And it is called "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 youget to listen to your tunes while you're traveling, and arrive with a fully-charged player.
Frequencies: 88.1 - 107.9 MHz
Oscilator: High stability crystal, phase-lock loop control
Frequency Response: 50 Hz to 15 KHz
Operating Range: 10 - 30 ft.
Power Source: Provided by 12 Volt cigarette lighter/power outlet (no batteries required).
Dimensions: 12.5 mm x 26 mm x 72 mm;
total length including cable: 85 cm.
Weight: 0.6 oz.