Not a fan

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. Specification: Model: F711 Speed Mode: one Power Supply: 5V USB Plug or 4 AA batteries Power Consumption: 2 W USB Cable Length: 1.2M Dimension(inch): 7.5 x 3.5 x 5.9 N.W.(lb): About 0.59