EPL 4ft Black USB Line Out Dock Cable 3.5mm AUX Audio Charger Cable for Ipod touch / Iphone 3G, 3Gs, 4 4S Reach 4FT long. Good for using in car. Charge and Sync via the USB connector Charge your iPod/iPhone while listening to music in your car or home via AUX input Listen to music in high quality via the Auxiliary audio connector - Higher quality from Apple connector output than headphone jack output