<b>Parameters:</b> <br>^Small and very good for demonstration. <br>^Complete set mini wind turbine generator model kits. <br>^Can also be used to make science model. <br>^You can convert 360 degree at any angle, and it will automatically face the wind direction. <br>^Can work with light wind. <br><br><b>Features:</b><br> Stepper Motor controller simple Drive PWM controller <br>Rated Power: 0.55 W <br>Output Voltage: 5.5 V <br>Diameter of Fan(installed): 100mm <br>Quantity of Vane: 4 <br>Rated Wind Speed: 5.5 m/s <br>Diameter of Motor: 24.5mm <br>Height of Motor: 34.2mm <br>Weight: 120 g(approx.) <br><br><b>Package included:</b><br> 1 x Micro Wind Generator <br><br><b>Note:</b><br> 1. Please allow 1-3 mm error due to manual measurement. Thanks for your understanding.