Features: Powered by DC5V 2A,high-precision double ball-bearing air blower High air volumn 3600rpm adjustable big wind and reliable safety Plug-play,and setting up fire quickly, helping you make barbecue more easily. Widely used for BBQ stove, AVcabinet, wood stove, outdoor firewood stove, etc. USB connection.Red wire is positive pole, black wire is negative pole. Specifications: Output: for DC5V 2A Fan Size: approx 9.7x9.7x3.3cm/3.82xx3.82x1.3in Speed: 3600RPM Cable Length: approx 150cm/59.05in Optional Air Duct Size: approx:33mm(1.3in) Note: Due to the difference of different monitors, the picture may not reflect the actual color of the item. Thanks! Due to manual measurement, please allow error of 0-1cm. Please make sure you do not mind before bidding. Only the cooling fan, does not include other accessories in the picture. Package includes: 1 Set x 9733 Fan