Specification----------------------------------------------------------------------------Working principle:The wind blows on the paddle on the generator shaft to rotate, when a certain speed is reached, the motor starts to generate electricity, and the higher the speed, the greater the voltage of power generation. It should be noted that generally the wind power of the hair dryer is required to drive the higher voltage, and the natural wind cannot be driven up.Micro generator1. When the wind is strong, the motor voltage does not carry LED lights and other loads, and the no-load voltage can easily reach about 20V.2. The new motor with USB socket can be directly connected to the supporting USB lamp for use. Other low-power USB devices are not guaranteed to be powered. As for charging mobile phones and charging banks, it will not work because they do not have a voltage regulation module.3. If it is equipped with a regulated 5V module, the charging current is about 3OMA under the peak wind power of the household fan. If the smartphone battery is discharged at 4000MA, the theoretical charging time is 6 days. (There are no products on the market that cost more than 100 kronor. It is almost impossible to charge mobile phones and charging banks normally. Even if it seems that the power can be charged, it is meaningless.)Length 18 cm[Inner hole] 2 mm (fastening)MaterialABS plasticWeight|About 4.8 grams[Installation] Positive and negative paddles, which can be attached to the motor shaft with a shaft diameter of 2 mmUsageIt can light up when running against the wind, or it can be installed on the bicycle to emit light while ridingIt comes with a USB light bulb with a 1m USB cable and 5 watts, which can be directly connected to the power bank and it will light up for emergency lighting at any time.Product includes-----------------------------------------------------------------------1 x Micro Wind Turbine/1 x Micro Wind Turbine1 x Light Bulb