Length:14.3cm Compatible with USB 1.0 and USB 2.0 Plug and play; no driver installation required Powered by USB port， low power consumption Volt: DC12V Current: 0.18Az Working longevity: 50，000 hours About the product 1. Brand new and high quality  2. Light weight， portable use and easy to carry outdoor  3. Small and flexible body， suitable for all occasions  4. Good gift to yourself， friends， lover or family  5. Can be used on power bank， laptop， notebook， car charger and other devices with USB port  6. Plug and play， very convenient  7. Very low fan noise during operation  8. Unique bendable design