Upload and charge your Zune media player through the USB port The innovative retractable design cuts down on travel bulk & ensures the portability of your MP3 player w/ out sacrificing functionality. No more heavy, bulky, tangled cables. Brand: Insten Color: Black Length: 3.5 inches / 0.1m (can be extended up to 32.5 inches / 0.8m) Compatible with Microsoft Zune