1. Stepless speed control technology: provides smooth fan speed control, users can easily adjust the wind speed according to the actual demand, from silent and low speed to high efficiency cooling, to meet the needs of different scenarios 2. Dual USB output design: Equipped with Type-C and USB-A ports, compatible with the latest laptops, tablets, cell phones and other devices to enhance the convenience of use. 3. Supports up to 5W power output to full-speed fan operation, providing strong cooling performance for high-performance laptops and large devices. 4. Compact and , easy to carry, does not take up too much space, is the ideal companion for home, office, traveling 5. Wide range of applications, can be adjusted for a variety of devices, desktop fans, laptop cooling, cell phone cooling, USB pumps and so on. Input: 5V2A Maximum power: 5W Use: USB plug-in, data cable plug-in (shipping does not come with a free data cable) Output: 5-9V 1A Rated power: 3W Input jack: USB/Type-c Warm tips: row plug with USB port can also be used Color: As Shown Material: plastic Package Contents: 1 * Speed Controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.