Features: Adjustable speed controller enables setting the fan speed to optimal- noise and airflow- levels for various applications and noise environments for DC-brushless blower is suitable for projects that requires cooling or ventilation with limited clearance; Plug-play, the power adapter input 100V to 240V ; enables the fan to be powered throughAC outlet widely used in car for seat-, AV-cabinet, wood stove, outdoor BBQ firewood stove, etc. brand new and high quality With 3.8cm Air duct and the speed can be adjusted Specifications: Material: Iron+Metal Input: AC100-240V 50/60Hz 5.5x2.1mm Output: for DC12V 2A Fan Size: approx 12x11.3x3cm/4.72x4.45x1.18in Nominal Current: 2A Power: 20W- Speed: 5000RPM Air volume: 45CFM Wind pressure: 1.952in Noise: 65dba Bearing: Double-Ball Weight: 185g Controller Plug-：EU-plug Package Includes: 1Set x Fan with Speed Controller 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 an 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.