Apple MFi certified 30 pin dock cable and uses original connector from Apple | Slim dock connector design that allow it to be used with devices without removing case | Use the optimum length 4 feet(1.2m) dock to USB cable to charge and sync your iPhone iPod iPad to your Mac or Windows PC | Works with iPhone 4/4S/3G/3GS,iPad 1/2/3, iPod touch 1/2/3/4, and iPod nano 6 | Lightweight and easily coiled, Super durable with reliability quality