【USB Waist Fan】This portable fan is equipped with a 4500mAh battery that is rechargeable via USB. Its battery life varies from 4 to 16 hours depending on the wind speed and provides long-lasting cooling during outdoor activities, travel, or sporting events. Don't worry about battery life! 【Lightweight Waist Fan】Our portable fan with battery is stylish and compact, weighing only 165 grams! It fits easily in any pocket! Very comfortable to wear, it can be worn by hand, around the waist, or around the neck. This keeps your hands free while you work, drive, or relax. 【Mini Fan with High-Performance Motor】This rechargeable portable waist fan with clip is equipped with a powerful and efficient turbine motor. The high-speed brushless motor reaches a rotation speed of 36,000 rpm and a rotation speed of 13.3 m/s. The explosive power of the motor ensures instant cooling during the hot summer. 【Ultralight and Shockproof】 This cordless fan is made of high-quality ABS + PC to prevent drops and