Comes with full manufacturer's warranty.
http://www.xitel.com/product_hflipodnano.htm

Xitels HiFi-Link for iPod nano combines the versatility of iPod with the power of a home stereo. Its unique dock configuration greatly extends the nanos connectivity, allowing it to seamlessly integrate with anything from a top-of-the-line surround sound system through to a simple boombox or powered speakers while offering full recharging and a remote control.

Designed by a true audio company

Built from the ground up for superior performance, Xitels HiFi-Link for iPod nano replicates the high-end outputs found on audiophile grade equipment. By processing a very clean signal from the nanos base connector, HiFi-Link provides exceptionally pure and dynamic audio for a true high fidelity experience. HiFi-Link for iPod nanos contoured design perfectly guides and supports iPod nano securely into place, protecting its valuable dock connector while relieving any undue strain.

With over 30 years experience in designing complex audio products for international brands, you can rest assured that your Xitel HiFi-Link for iPod nano is fully loaded with the latest innovative technology. We dont make plastic cases or other accessories, we just make your iPod sound the best it possibly can!

Includes SRS Trubass

With the inclusion of SRS TruBass, Xitels HiFi-Link for iPod nano significantly enhances the lower frequencies of any music. Using advanced physchacoustics, HiFi-Link adds back the warmth and depth audio compression takes away while also allowing speakers to generate lower bass than would otherwise be possible. As part of its high fidelity configuration, HiFi-Links bass processing can be totally bypassed for a pure signal path when desired.

Remote control and automatic recharging

With the supplied fully featured remote control, it couldnt be easier to skip tracks, change playlists, fast forward, rewind, pause, play, adjust the volume or even turn iPod nano on and off.

NOTE: For 1st Generation Nano.