Dimensions: 40 x 40 x 28mm / 1.57 x 1.57 x 1.1'' | Rotation Speed: 9200RPM (Revolutions per minute) | Airflow: 17CFM (Cubic feet per minute) | Rated Current: 0.23A, Rated Power: 2.8W | Start-stop Function: The blades will be spun on two seconds after starting