[Brushless Motor - Super Power]The combination of three-phase brushless motor and 3500mAh battery increases wind speed, power and durability. Wind turbine for strong winds up to 13650rpm. Cools for 2-13 hours on a single charge. .[Slide Switch - Wind Speed]This fan has a powerful motor that can cool you down quickly. The fan can be adjusted from 1 to 199 speeds to suit the changing wind power needs in any environment. .[Digital Display & Power Redminder]The personal fan is equipped with a high-resolution digital display that allows users to monitor the current wind speed and remaining battery life at a glance. No need to worry about battery life. .[Versatile Charging Options]: This USB fan charges at 5V-2A and takes 2.2 hours to fully charge. It comes with a USB A to USB C cable, so you can charge it with a regular USB socket, laptop, power bank or car charger. .[Small Size- Anti-Lost]This compact personal fan measures only 6.562.322.44 inches and weighs 0.41 lb. It can be easily stored in a pocket or bag, making it suitable for travel or outdoor activities.