JisuLife FA19 4000mAh Wireless Rechargeable Desktop Mini Fan Silent Portable Fan 1. Battery capacity: 4000mAh 2. Charging time: about 3-4 hours 3. Use time: up to 15 hours 4. Charging port: Type-C 5. Wind speed level: 4 adjustable levels 6. Operating mode: air blowing and sleep mode 7. Material: ABS 8. Size: approximately 18.2 x 22.8 x 6 cm Features: 1. Streamlined flow guide with removable wind cover for low resistance and noise suppression 2. 7 soft fan blades with wing-shaped design for noise reduction 3. All copper brushless motor for smooth speed control, quiet operation, and energy efficiency 4. Lightweight and portable design suitable for various applications 5. 360-degree up and down, left and right rotation 6. 270-degree adjustable wide-angle opening 7. Durable ABS plastic material, resistant to discoloration 8. Safety grille design to protect hands 9. Non-slip silicone base with soft rubber feet for stability 10. Built-in indicator light to display power status