10", 2 Speed, SmartPower Fan, With USB Power Port & Adapter, Rechargeable, Energy Efficient, Runs On Built In Rechargeable Batteries, Includes AC Adapter, & 6' Car Adapter, Or 8 "D" Cell Alkaline Batteries, Not Included, USB Power Port Allows The User To Charge Their Favorite Personal Electronic Devices From Either The Built In Rechargeable Batteries Or The Replaceable Alkaline Batteries, Chargeable Items Include Cell Phones, Mp3 Players, GPS Devices, Digital Cameras, Ultra Velocity Powered.