No.2 Warehouse Light up Luminescent Visible Current Flow Smart Charge & Sync Cable for Apple Iphone 4 4s (White/blue) + a Piece of Clean Cloth Electroluminescent (EL) technology to see current flow as charging Shuts off power from the source when your device is fully charged reducing the consumption from charging and data sync Visible current flowing speed indicates the iPhone battery level: 1% - 65% FAST; 65% - 99% SLOW; 100% OFF Compatible with :iPadiPhone, iPhone 3G, iPhone 3G S, iPhone 4 4SiPod Touch 1st, 2nd, 3rd, 4th Gen , iPod Classic ,iPod Nano 3rd, 4th, 5th, 6th Gen