iTrip wirelessly sends your iPod Nano's audio to any FM receiver, setting you free from the tyranny of headphones. iTrip for iPod Nano interfaces using the Nano's own clear, bright screen to display tuning and setup information. This efficient approach makes iTrip for nano the slimmest, lightest and best-looking iPod accessory. Griffin's SmartDisplay technology seamlessly integrates all functions and features with the iPod Nano. One-touch navigation puts all iTrip functions at a single fingertip. The exclusive SmartSense volume control dynamically adjusts the iPod's volume level for optimal audio quality. Also, you can control iTrip's volume level through the iPod's standard click wheel adjustment. iTrip accomplishes all this without adding bulk to the slim, sexy iPod Nano. The Nano slides into iTrip and securely connects via the iPod's dock and headphone connectors. iTrip's patented micro grip material provides a secure grip that never loses its holding properties. iTrip's innovative selectable mono or stereo modes allow the user to adjust for the absolute best possible audio transmission under real-world conditions. iTrip draws its nominal power directly from iPod Nano, requiring no batteries or AC adapters. A built-in USB Mini-B port allows you to charge or synchronize your iPod while iTrip is in use.