- Versatile Power Range: Operates between 4 to 12 V with a rated power of 5 W (ensure not to overload). - Easy Setup: Simply plug the regulator into your phone's charging port, connect the fan's USB plug to the regulator's USB port, and adjust the control knob for desired settings. - Adjustable Speed Control: Features stepless speed regulation with output voltages from 2.5 V to 8 V, allowing you to smoothly modify the fan speed for optimal comfort. - Durable Construction: Made from ABS plastic for long-lasting use, featuring a USB input and a user-friendly rotary control mechanism—rotate clockwise to increase speed and counterclockwise to decrease it. - Practical Applications: Perfect for personal use at your desk, providing cool air during work or study sessions. Ideal for use in a camping setup where portable cooling is needed. Great for enhancing comfort in small spaces, whether at home or in a vehicle. - Compatibility: Works seamlessly with any USB-powered fan, making it a versatile accessory for a variety of devices. This product is engineered to deliver reliable performance, ensuring you stay comfortable in various situations.