JisuLife FA29A Clip Desktop Mini Fan Portable USB Rechargeable Fan 1. Battery capacity: 4000mAh 2. Charging time: about 3-5h 3. Use time: about 4-16h 4. Charging port: Type-C 5. Wind speed level: 4 adjustable levels 6. Size: about 15.5 x 13.9 x 20.4cm 7. Weight: about 405g Features: 1. Muffled motor, all-round noise reduction, surging power 2. Balanced fan blade pressure, balanced air ducts 3. Removable and washable air deflector cover, rectification and wind gathering into strands, low resistance and noise reduction 4. Embedded vibration and noise reduction system, more stable rotation 5. 360 degree rotation up and down, left and right 6. Silicone pads on the bottom to reduce fan vibration and make it more stable 7. Duckbill clip design, easy to operate