Features: 1. Connet all ipod devices with 30 pin connector to USB equipped computer. 2. Uniqe retractable design, Compact size for traveling convenience. 3. Work on USB 2.0. 4. Directly plug and play for 2000 and windows XP. Specifications: 1. Net weight: 0.3Ooz 2.Length: 4.5 inches( Max extension length: 32 inches.