Brushless motor - super power The combination of three-phase brushless motor and 5000mAh battery significantly improves wind speed, power and endurance. The maximum wind speed can reach 9m/s. The maximum speed of the handheld fan is three times that of ordinary handheld fans, reaching 15,000 RPM. Cools for 3-15 hours on a single charge.Rolling switch - Customizable wind speed This small fan adopts a rolling switch design, and the wind speed can be adjusted steplessly. The portable fan can customize the wind speed from 1 to 100 to meet your various wind needs in any scenario.Technical design - the cold air delivery personal fan adopts a turbine structure and a powerful motor to quickly compress and cool the inhaled hot air into blown cold air. This allows you to cool down quickly on hot days. The body of this turbofan uses advanced oxidation technology to give it a metallic feel. Its smooth cylindrical design provides a comfortable and cool feel.Digital display - battery reminder FA53 travel fan is equipped with a high-definition digital display that can display the current wind speed and remaining battery power, so you no longer have to worry about the remaining power of the fan. When this mini fan is low on power, you can schedule chargiin advance, ensuring you have a cool companion on every trip.Multiple Charging Methods - Fast Charging This USB charging fan supports 18W fast charging plug, takes only 1.5-2 hours to fully charge, and can provide up to 15 hours of cooling time afte full charge. In addition to the included USB Type-C (3.28 ft) cable, this battery-powered fan also comes with an additional USB Type-A (1.64 ft) cable, allowing you to use it with a regular USB outlet, laptop, power bank, or car charger