Audio Extension Cable for use with the HTC EVO 4G LTE / ONE * Compatible with: Any Cell phone / Mp3 Players / PDA with standard 3.5mm jack * The innovative retractable design cuts down on travel bulk & ensures the portability of your MP3 player w/ out sacrificing functionality. * Length: 5 inches / 12cm (can be extended up to 32.5 inches / 82.55 cm). * No more heavy, bulky, tangled cables. Accessory ONLY.