Features: Two Fans: This product adopts a 2-fan designs, providing stronge heat dissipation ability, effectively reducing equipment temperature, and protecting equipment from overheating damage. Thin : The product has an thin appearance designs that does not occupy too much space and is suitable for various sizes of equipment. High speed: The fan speed reaches 2400rpm, which can quickly remove the heat generated by the equiment and ensure its continuous and stable operation. 5V power supply: The product uses 5V power supply and is compatible withmost devices, making it easy to use and connect. The fan operates with low noise and will not interfere with the work or rest environment. Specifications: Material: Plastic Vlotage:5V Current:0.3A Speed：2400RPM Connector： USB Package Includes: 1PC USB Cooling Fan note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. The error of manual measurement of the size is within the normal rangeof 0-2cm.