General description: The 4000mAh portable fan is a quiet mini fan designed for versatile use thanks to its 3-in-1 design: it can be placed flat, clipped onto objects, or hung up. This USB fan is ideal for various scenarios, whether at home, in the office, while camping, or in a stroller, allowing you to enjoy a refreshing breeze at any time. Technical specifications Battery: 4000 mAh Charging time: 3.5 to 4 hours Battery life: 2.5 to 15 hours depending on speed Wind speed: 5 adjustable speeds (1-30-60-90-120) Rotation: 360° (up/down, left/right) Display: LED screen showing wind speed and battery level Compatibility and accessories Charging port: Type-C, compatible with chargers, power banks, computers, and car USB ports Usage This fan is perfect for use in various environments such as: Home Office Camping Stroller Sleep Other information Low-noise design for quiet operation Safety guard to prevent children's fingers from entering Rubber-coated base and clips to prevent movement and damage to objects Ideal summer gift for family and friends