Compatible with: Any Cell phone / Mp3 Players / PDA with standard 3.5mm jack! * Apple iPhone 3G, 3GS, Blackberry, Creative, HTC, Zune, Archos, iRiver, Samsung & Much More! * The innovative retractable design cuts down on travel bulk * Length: 5 inches / 0.1m (can be extended up to 32.5 inches / 0.8m) * This 3.5 mm audio extension cable makes hard to reach places accessible