【Powerful Jet Fan】The cordless fan adopts a high-power brushless motor, providing high-speed airflow for efficient dust removal, water blowing, and snow clearing 【Durable Construction】Crafted from premium aluminum alloy, ensuring long-lasting performance and resistance to wear and tear 【1-100 Speed Levels Adjustable】With the stepless sliding speed control, you can easily adjust the airflow by sliding gently, from a gentle breeze to a hurricane airflow, meeting the demand for quick power adjustment 【Long-lasting Battery Life】Equipped with a 4000mAh battery, providing up to 5.5 hours of continuous operation on the lowest setting 【Fast Charging Capability】Supports quick charging with up to 54W input, fully recharging in approximately 2 hours for minimal downtime 【Compact and Portable】With dimensions of 104.5x254.1x60.7mm, this handheld fan is easy to carry and store for use anywhere Specifications: Material: Aluminum alloy Working Voltage Range: 16.5V - 25.2V Operating Temperature Range: 0℃ to +40℃ Storage Temperature Range: -20℃ to +60℃ Battery Capacity: 4000mAh * 6S Theoretical Battery Life: 5.5h (on first gear) Charging Input: 5V-2A, 9V-2A, 12V-2A, 20V-3A Charging Time: Approximately 2 hours (max 54W) Product Dimensions: Approx. 104.5x254.1x60.7mm (with battery installed)