Usage Tips:JisuLife FA19 4000mAh Wireless Rechargeable Desktop Mini Fan Silent Portable Fan 1. Battery capacity: 4000mAh 2. Charging time: about 3-4h 3. Use time: about 15h 4. Charging port: Type-C 5. Wind speed level: 4 adjustable levels 6. Operating mode: air blowing sleep mode 7. Material: ABS 8. Size: about 18.2 x 22.8 x 6cm Features: 1. Streamlined flow guide removable wind cover, low resistance to noise suppression 2. 7 soft fan blades, wing-shaped noise reduction profile 3. All copper brushless motor, smooth speed, silent and energy saving 4. Lightweight and portable, wide range of applications 5. 360 degree rotation up and down, left and right 6. 270 degrees adjustable open large angle 7. ABS plastic material, delicate and comfortable, not easy to change color 8. Safety grille design, intimate protection, not to hurt your hands 9. Non-slip silicone base, skin-friendly soft rubber, non-slip and stable 10. With indicator light to show the power condition