opolar usb desk fan, small but mighty, quiet portable fan for desktop office table, 40° adjustment for better cooling, 3 speeds, 4.9 ft cord opolar <b><br>opolar mini usb fan with updated airflow <br>want a small usb fan with strong airflow? need a quiet fan on your desk? do not hesitate, choose opolar 4 inch fan with a amazing price. <b><br>features: <br>usb powered <br>3 settings <br>quiet operation <br>to ensure that we meet your needs, opolar offers one year warranty for defective products. incorrect human operation, including but not limited to disassembling, burning, soaking, and dropping it, is not covered by the warranty. <br> <br> <b>specification: <br>output power(max): 2.5w<br>material: abs plastic <br>dimension(inch): 6.6*3.3*4.9 inch <br>n.w.(lb): about 0.33